| A | B |
|---|
| aluminum | AL |
| gold | AU |
| carbon | C |
| what is an element | connot be broken down into similar substances |
| the smallest particle of an element is an | atom |
| what are two catagories of pure substances? | elements and compounds |
| why does an element have a fixed uniform composition? | because it contains only one type of atom |
| what is a compound? | it is a substance that is made from two or more simpilar substances |
| what is true about compounds | the substances that make up a compound are always joined in a fixed proportion |
| why do the properties of a mixture vary? | because the composition of a mixture is not fixed |
