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EM.26.287.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

If I put saltwater in a dish it evaporate over heat and turns to salt crystals.

3irrelevant

EM.26.319.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

Organized cubes with X.

0correct

EM.26.321.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

With Xs.

2partially_correct_incomplete

EM.26.339.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

The salt crystals leaves a Xs.

2partially_correct_incomplete

EM.26.354.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

It was while you could see through square.

3irrelevant

EM.26.402.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

They all look the same, but some of them look different and then really small.

3irrelevant

EM.26.408.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

It is shaped like a diamond and it looks like a diamond.

3irrelevant

EM.26.426.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

Squares with the Xs on them.

0correct

EM.26.438.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

Square has X on it little X.

0correct

EM.26.443.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

They are like little boxes with Xs on them.

0correct

EM.26.444.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

They are squared with Xs in them.

0correct

EM.26.486.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

They are squares with Xs in them.

0correct

EM.26.500.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

The salt was made of crystals because crystals have Xs.

2partially_correct_incomplete

EM.26.502.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

It is a square and Xs on it.

0correct

EM.26.507.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

The salt crystals has Xs in the middle of the square.

0correct

EM.26.547.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

The salt crystal is a square shape with a X in the middle.

0correct

EM.26.561.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

Is just tiny and big because of crystals.

3irrelevant

EM.26.575.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

I do not know.

4non_domain

EM.26.578.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

I do not know.

4non_domain

EM.26.609.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

They have a square with a X in it.

0correct

EM.26.614.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

It is shaped as square and has an X in the middle.

0correct

EM.26.631.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

They have X in them.

2partially_correct_incomplete

EM.26.637.1

Salt crystals form when the water evaporates from saltwater. Describe the salt crystals.

The salt crystals are squares with Xs on top.

The salt has the letter X.

2partially_correct_incomplete

EM.27b.386.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would see if it bubbles.

2partially_correct_incomplete

EM.27b.391.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

Bubbles coming out of the rock and murky water.

2partially_correct_incomplete

EM.27b.393.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

The vinegar would get all full with bubbles, and murky.

2partially_correct_incomplete

EM.27b.403.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

I would observe broken calcite that looks like wet baby powder.

3irrelevant

EM.27b.404.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

Well a mineral is in a can of rock there is.

3irrelevant

EM.27b.409.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

It would be mostly about minerals.

3irrelevant

EM.27b.416.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

I would see if the rocks bubble.

2partially_correct_incomplete

EM.27b.433.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

I would observe many bubbles staying on the calcite, and some floating to the top.

2partially_correct_incomplete

EM.27b.436.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would see bubbles.

2partially_correct_incomplete

EM.27b.438.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would look for bubbling.

2partially_correct_incomplete

EM.27b.441.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

I would look for bubbles if the it has bubble it has calcite.

2partially_correct_incomplete

EM.27b.454.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

If the rock fizzes it contains calcite because calcite fizzes when put with cold acid.

0correct

EM.27b.459.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would see the mineral fizzing.

0correct

EM.27b.467.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

I would notice that it should be bubbling.

2partially_correct_incomplete

EM.27b.487.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

The rock would be covered by bubbles and fizz.

0correct

EM.27b.489.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You will see bubbles coming up and you will see them going fast.

2partially_correct_incomplete

EM.27b.494.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would see bubbles fizzing to the top.

0correct

EM.27b.501.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would see bubbles floating up or down.

2partially_correct_incomplete

EM.27b.505.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

The rock would covered by bubbles and fizz.

0correct

EM.27b.508.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

Some parts will fizz and bubble with rise to the top.

0correct

EM.27b.509.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would see bubbles rising from the calcite.

2partially_correct_incomplete

EM.27b.525.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

It would fizz and get small.

0correct

EM.27b.530.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

It would have little tiny crystals that are white.

3irrelevant

EM.27b.533.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

If I in a test on as rock with acid I will put acid on the rock and let it settle overnight.

3irrelevant

EM.27b.537.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

By it fizzing and it might take the rock apart.

0correct

EM.27b.541.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

Bubbly, shiny and kind of see through.

2partially_correct_incomplete

EM.27b.559.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

Because the one thing that you put vinegar has or has not calcite.

3irrelevant

EM.27b.563.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

For bubbles.

2partially_correct_incomplete

EM.27b.564.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

Calcite reacts with vinegar.

3irrelevant

EM.27b.569.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

Water breaks rock to little pieces.

3irrelevant

EM.27b.574.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

It will bubble.

2partially_correct_incomplete

EM.27b.606.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

I would describe what the rocks color is and what the mass if it is a mineral or not.

3irrelevant

EM.27b.609.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

The rock would fizz. If it fizzed then there is calcite in it.

0correct

EM.27b.610.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

It will be separated in groups.

3irrelevant

EM.27b.614.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

You would observe fizz in the rock that contains calcite.

0correct

EM.27b.632.1

You can tell if a rock contains calcite by putting it into a cold acid (like vinegar). Describe what you would observe if you did the acid test on a rock that contains this substance.

Many tiny bubbles will rise from the calcite when the calcite contacts the cold acid.

It sizzles. If it first sizzles it contains calcite.

0correct

EM.35.384.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

You could tell if it has the hardest if most of it came off.

3irrelevant

EM.35.387.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

If just the penny could scratch and the nickel could not the penny is harder.

0correct

EM.35.391.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Whichever one was damaged most was less hard.

0correct

EM.35.398.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Rub them against a crystal.

3irrelevant

EM.35.403.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Which had less scratches.

0correct

EM.35.408.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

If it makes a scratch or a little dent.

2partially_correct_incomplete

EM.35.418.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Well she can take the penny and the nickel and rub them together.

0correct

EM.35.436.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

The one that is scratched is softer.

0correct

EM.35.437.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

She could tell which is harder by getting a rock and seeing if the penny or nickel would scratch it. Whichever one does is harder.

2partially_correct_incomplete

EM.35.441.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Maybe he should scratch even other then when you are done see if one have scratches.

0correct

EM.35.444.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

It would tell her because she could scratch the penny on the nickel and the nickel on the penny and see which one is scratched.

1contradictory

EM.35.487.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

In order to tell which is harder, else would have to see if the penny and nickel leave a mark to see which is harder.

0correct

EM.35.490.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

By the one that leave a mark on one. That means that that one is harder.

0correct

EM.35.493.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

The one that got scratch each penny or a nickel got scratch.

0correct

EM.35.496.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

She can scratch it and see which one scratch the rock or mineral.

2partially_correct_incomplete

EM.35.497.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

If the penny gets scratched the nickel is harder and if the nickel gets scratched then the penny is harder.

0correct

EM.35.500.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

The nickel is the hardest because is you scratch it with a penny it will not scratch but the nickel could because it is so much.

0correct

EM.35.501.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

You get a penny or a nickel if one of them scratches the metal it is hard.

0correct

EM.35.503.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

She would know because the one that is scratched is the one that is least hard and the one that is not scratched is the one that is hardest.

0correct

EM.35.507.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

How you would know that one of them is harder is for say if the nickel never a scratch the penny, and the penny got scratch by the nickel then the nickel would be harder than the penny that is how you would which one is harder.

0correct

EM.35.510.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

The one that got a scratch is not hard.

0correct

EM.35.561.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

A paperclip is harder.

3irrelevant

EM.35.565.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

The one that is harder will scratch the less harder one.

0correct

EM.35.568.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

I do not know.

4non_domain

EM.35.569.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Fire.

3irrelevant

EM.35.570.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

The nickel because it is bigger and it harder.

3irrelevant

EM.35.571.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

By using your hand.

3irrelevant

EM.35.572.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

If it left a scratch.

0correct

EM.35.575.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

I do not know.

4non_domain

EM.35.598.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

The nickel is the heavier and the penny is the lighter.

3irrelevant

EM.35.599.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

You can rub the penny and the nickel together. The one with the mark and a scratch is the least hardest the one with no mark or scratch is the hardest.

0correct

EM.35.603.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Because of it he you scratch with a penny.

2partially_correct_incomplete

EM.35.609.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Rub them together and whichever one has a scratch or a mark the is softer and the one that has nothing on it is harder.

0correct

EM.35.616.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Rub to penny with nickel and whichever one had a scratch is some.

0correct

EM.35.632.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

She would scratch the rocks together the one that scratches is softer.

0correct

EM.35.647.1

Carrie wanted to find out which was harder, a penny or a nickel, so she did a scratch test. How would this tell her which is harder?

The harder coin will scratch the other.

Nickel is harder.

3irrelevant

EM.47.103.1

The sand and flour in the gray material from mock rocks is separated by mixing with water and allowing the mixture to settle. Explain why the sand and flour separate.

The sand particles are larger and settle first. The flour particles are smaller and therefore settle more slowly.

One is heavier than another see it settles in how many layers there is ingredients.

0correct

EM.47.109.1

The sand and flour in the gray material from mock rocks is separated by mixing with water and allowing the mixture to settle. Explain why the sand and flour separate.

The sand particles are larger and settle first. The flour particles are smaller and therefore settle more slowly.

Because the sand is heavier.

0correct

EM.47.116.1

The sand and flour in the gray material from mock rocks is separated by mixing with water and allowing the mixture to settle. Explain why the sand and flour separate.

The sand particles are larger and settle first. The flour particles are smaller and therefore settle more slowly.

Because the sand is the heaviest and the sand would go to the bottom.

0correct

EM.47.122.1

The sand and flour in the gray material from mock rocks is separated by mixing with water and allowing the mixture to settle. Explain why the sand and flour separate.

The sand particles are larger and settle first. The flour particles are smaller and therefore settle more slowly.

We shook it up and sand is heavier than water so it went to the bottom.

0correct

EM.47.172.1

The sand and flour in the gray material from mock rocks is separated by mixing with water and allowing the mixture to settle. Explain why the sand and flour separate.

The sand particles are larger and settle first. The flour particles are smaller and therefore settle more slowly.

The sand and flour separate because sand is heavier than flour.

0correct