| A | B |
|---|
| Pure Substance | all particles of that substance are alike |
| Element | the simplest pure substace |
| Hydrogen | H |
| Potassium | K |
| Sodium | Na |
| Sulfer | S |
| Metals | Elements that conduct heat |
| Is air a pure substance | no |
| If you melt Iron is it still an element | Yes |
| Proton | Postively charged subatomic particle |
| Neutron | Neutral subatomic particle |
| Where are protons and neutrons found | Nucleus |
| Where are electrons found | Outside the Nucleus |
| Molecule | two or more atoms chemically bonded to eachother |
| What holds molecules together | chemical bonds |
| The amount of substance/stuff in an object | Mass |
| The amount of space that an object takes up | Volume |
| Mass divided by Volume | Density |
| Compound | Substance containing two or more elements chemically combined |
| How can you separate a compound? | Heat and Electricity |
