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Sci Vocab. Mrs.White
Study For Test
| Question | Answer |
|---|---|
| A particle with a negative electrical charge | Electron |
| The center of an atom, which contains most of the atom's mass | Nucleus |
| A positively charged particle inside an atom's nucleus | Proton |
| A particle that is found in the nucleus of an atoms and has no electrical charge | Neutron |
| An area where electrons arranged in energy levels, travel around an atom's nucleus | Electron Cloud |
| A pure substance that cannot be broken down into a simpler substance | Element |
| The number of protons in an atom or an element | Atomic Number |
| One or two or more atoms of an element having the same number of protons but a different number of neutrons | Isotope |
| The average mass of the atoms of an element | Average Atomic Mass |
| A chart that shows the elements in order of increasing atomic numbers | Periodic Table |
| A chemical bond that forms when atoms share electrons | Convalent Bond |
| At an attraction that holds oppositely charged ions close together | Ionic Bond |
| A substance formed by the chemical combination of two or more elements | Compound |
| An atom that positively or negatively charged because it has gained or lost electrons | Ion |
| A chemical reaction that releases energy | Exothermic Reaction |
| A chemical reaction that absorbs energy | Endothermic Reaction |
| The measure of how fast a chemical reaction occurs | Rate of Reaction |
| A substance that speeds up a chemical reaction but is not used up itself or permanently changed | Catagst or Catayst |
Created by:
KHunter
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