| Question | Answer |
|---|---|
| What is a positively charged particle in the nucleus of the atom? | A proton |
| What is the region surrounding an atom's nucleus where one or more electrons are often found? | The electron cloud |
| What is a negatively charged particle that occupies the space in an atom outside the nucleus? | An electron |
| What are one or more atoms of an element having the same number of protons but a different number of neutrons? | An isotope |
| What is the region the center of an atom that contains most of the mass of an atom? | The nucleus |
| What is the number of protons in the nucleus of an atom of an element? | The atomic number |
| What is an uncharged particle in the nucleus of an atom? | A neutron |
| Does the nucleus of an atom contain protons and neutrons or electrons and neutrons? | Protons and electrons |
| Does the nucleus have a positive or negative charge? | Positive |
