| A | B |
|---|
| __are the cells smallest component | atoms |
| all__is made of atoms | matter |
| Nucleus-___ | cluster of protons and neutrons |
| protons | + |
| neutrons | 0 |
| electrons | - orbit |
| atoms are ____ | all alike in an element |
| ___known elements | 100+ |
| denoted by letter/letters | ex...HCO |
| No charge because | #of protons is the same as # of neutrons |
| Ions | unequal # of protons and electrons |
| Atoms are | empty space |
| Atoms are organized by amount of | energy |
| Electrons close to the nucleus have | less |
| further away | more |
| Orbit paths are unknow because they are so | fast and small |
| compound is | group |
