Question: Describe how you can tell the difference between the crystals from the calcite test and salt crystals when you observe them in an evaporation dish.
Reference answer: The crystals have different shapes. Salt crystals are square with little Xs. The calcite crystals are shaped like needles (long and skinny).

Student answer: It if looks like salt then the salt is salt crystals. If it has lines in them it is calcite crystals.

Student answer: Calcite is straight lines.

Student answer: The calcite crystals have lines. Salt crystal have squares.

Student answer: The calcite crystals were lines and the salt crystals were pyramids and squares.

Student answer: You can tell them apart because the calcite is just lines. The salt crystals were pyramids and squares.

Student answer: Calcite look like this the salt, drew picture, crystals look like this, drew picture.

Student answer: Salt crystals had an X on them and calcite crystals do not.

Student answer: The salt crystals look like squares.

Student answer: The salt crystals were square and the calcite had stripes.

Student answer: When the crystals of the mock rock you could see them really good and with the minerals, calcite, they were hard to see.

Student answer: I know that crystals are different than salt crystals because the salt crystals do not have needle like structures.

Student answer: They both have different crystals in them, the ones that are white are whiter than the calcite test crystals.

Student answer: The calcite crystals looked liked small white needles, the salt crystals were small white globs and squares with Xs and diamonds.

Student answer: Well the vinegar if you beating a rock it will store bowl.

Student answer: The crystals were points and the salt crystal were Xs.

Student answer: The salt crystals have Xs and the others do not.

Student answer: One of them was whiter than the other and had more crystals.

Student answer: I can tell the difference because calcite crystals spread out and salt crystals look like squares.

Student answer: The salt crystals have Xs in them and the other ones look different.

Student answer: They are different because crystals from the calcite test are not minerals and the salt crystals are minerals.

Student answer: I can they are different because of their shape calcite crystals look like needles and salt had squares with Xs inside them.

Student answer: The salt crystals have little Xs and are square shape.

Student answer: Because the salt crystals were squares with Xs in them and the calcite crystals were and did not make shapes.

Student answer: The crystals have Xs inside when calcite has like white spot.

Student answer: The calcite can be white and crystals is black.

Student answer: Salt crystals had Xs and the crystals did not.

Student answer: The crystals did not look much like calcite but the did not look like salt either.

Student answer: Because the crystals from the calcite test were long and skinny. The salt crystals were fat and had designs on.

Student answer: The calcite crystals had tall needle patterns and the salt crystals were squares with Xs in them.

Student answer: The difference is the mineral have a little X in the rock have more color.

Student answer: Because the crystals from calcite look like little needles and the salt crystals had squares with Xs on them.

Student answer: The one has Xs is the one look like sauce.

Student answer: Calcite crystals, salt crystals, acid, vinegar.

Student answer: A crystal is signet, and has stuff in the middle. The calcite is clear smooth. Salt crystals look like something is dried up.

Student answer: If you have a bowl and inside there is a crystal and you put vinegar in the bowl if it has calcite it will look like needles with salt it will look like yes.

Student answer: Calcite crystals, long needles. Salt crystals, X shape.