The student will be able to demonstrate that a few basic substances may combine many different ways to form many different kinds of matter.
Students are to draw symbols of combinations on their activity sheet.
Combinations must have a nut or bolt held together by thread. By now most students do not need to actually put the nuts and bolts together but simply draw the combinations. These are called elements. Each element is made of only one kind of atom. And the atoms of each element are different from those of any of the other elements.