| Question | Answer |
|---|---|
| Atoms have a central region called? | Nucleus |
| What is the region that surrounds the nucleus? | Electron |
| The nucleus contains ____________ and neutrons. | Protons |
| An electron is a ____________ particle located outside the nucleus. | Negatively charged |
| The modern model of an atom is called the ______________ model. | Electron-cloud |
| Isotopes have the same number of protons but a different number of _____________. | Neutrons |
| Adding a(n) _____________ to a neutral atom produces a new element. | Proton |
| A _____________ ion has more protons than electrons. | Positive |
| Ion which has a positive or negative ____________. | Charge |
| The electron cloud contains particles called___________. | Electrons |
