| A | B |
|---|
| Compound | Two or more substances that are chemically combined |
| Element | A substance that cannot be broken down into simpler substances |
| Proton | A positively charged particle in the nucleus of an atom |
| Electron | A negatively charged particle that orbits the nucleus of an atom |
| Nucleus | The center of an atom |
| Neutron | A particle in the nucleus of an atom with no charge |
| Protons & Electrons | There are the same # of these 2 particles in an atom |
| Atom | The smallest part of any element that can still be identified as that element |
| It is equal to the atomic number | How do you find the number of protons in an atom? |
| It is equal to the atomic number | How do you find the number of electrons in an atom? |
| Mass # - Atomic # | How do you find the number of neutrons in an atom? |
| NO | Can 2 elements have the same atomic number? |
| 3 | An atom has a mass # of 7 and an atomic # of 3. How many protons are there? |
| 3 | An atom has a mass # of 7 and an atomic # of 3. How many electrons are there? |
| 4 | An atom has a mass # of 7 and an atomic # of 3. How many neutrons are there? |
