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Chapter 1 Review
Atoms and Molecules
Question | Answer |
---|---|
What is a positively charged particle in the nucleus of an atom? | Proton. |
What is the region surrounding an atom's nucleus where one or more electrons are often found? | Electron cloud. |
What is a negatively charged particle that occupies the space in an atom outside the nucleus? | Electron. |
What is one or more atoms of an element having the same number of protons, but a different number of neutrons? | Isotope. |
What is the region at the center of an atom that contains most of the mass of an atom? | Nucleus. |
What is an atom that has a charge because it has gained or lost electrons? | Ion. |
What is the number of protons in the nucleus of an atom of an element? | Atomic number. |
What is the uncharged particle in the nucleus of an atom? | Neutron. |