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Java Games: Flashcards, matching, concentration, and word search. |
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| A | B |
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atom,  , 
| the smallest structural unit of an element |
| element,
| a substance that cannot be decomposed into simpler substances, e.g. carbon |
| matter,
| anything that has mass and occupies space |
| a proton,
| a sub-atomic particle with one unit of positive charge |
| a neutron,
| a sub-atomic particle with no electrical charge |
| an electron,
| a sub-atomic particle with one unit of negative charge |
| nucleus,
| the protons and neutrons of an atom |
| mass number,
| the number of protons and neutrons in the nucleus; symboized by A |
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English Language Institute |
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