| A | B |
|---|
| elements are made of | only 1 kind of atom |
| definition of compound | substance made of 2 or more elements chemically combined |
| definition of molecule | The smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms |
| definition of atom | the smallest component of an element having the chemical properties of the element |
| examples of elements | carbon, hydrogen, oxygen, nitrogen, iron, sodium, chlorine |
| separating compounds | requires chemical reaction (chemical change) |
| properties of compounds | has different properties than the elements it is made from |
| examples of compounds | water, ammonia, sodium chloride, iron oxide, carbon dioxide |
| separating elements | cannot be broken down smaller by ordinary chemical or physical means |
| definition of elements | building blocks of matter (make up all matter) |
| definition of mixture | 2 or more substances physically combined |
| properties of mixtures | each part keeps its own properties |
| examples of mixture | soda pop, salad, silly putty, muddy water |
| periodic table | where elements are organized |
