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Chapter 16 Section 1
Science Vocabulary
Question | Answer |
---|---|
electron cloud | region surrounding the nucleus of an atom where electrons are most likely to be found. |
energy level | the different positions for an electron in an atom |
electron dot diagram | chemical symbol for an element surrounded by as many dots as there are electrons in its outer energy level |
chemical bond | force that holds two atoms together |
ion | atom that is positively or negatively charged because it has gained or lost one or more electrons |
ionic bond | attraction that holds oppositely charged ions close together |
compound | pure substance that contains two or more elements |
metallic bond | bond formed when metal atoms share their pooled electrons |
covalent bond | chemical bond formed when atoms share electrons |
molecule | neutral particle formed when atoms share electrons |
polar bond | bond resulting from the unequal sharing of electrons |
chemical formula | combination of chemical symbols and numbers that indicates which elements and how many atoms of each element are present in a molecule |