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MJHS7 Chemistry
MJHS7 Chemistry Vocabulary
| Question | Answer |
|---|---|
| Change in matter that produces a new substance | Chemical change |
| Smallest particle of an element | Atom |
| Combination of two or more atoms | Molecule |
| Chemicals listed on the right of the arrow in a chemical equation | Products |
| Chemicals listed on the left of the arrow in a chemical equation | Reactants |
| Properties of a substance that occur when it chemically changes (reactivity, flammability) | Chemical properties |
| Properties of a pure substance (element) that do not change (melting point, boiling point, density, color, state of matter, pH) | Physical properties |
| Substance that cannot be broken down into any smaller substance | Element |
| Made from two or more pure substances in the same place but not combined into a new material | Mixture |
| Measure of the concentration of hydrogen ions (H+) in a solution | pH |
| Electrons found in the outer shell of an atom | Valence electrons |
| Substance made of two or more elements chemically combined in a specific ratio | Compound |
| Chart containing the elements found on Earth; arranged in periods (rows) and groups/families (columns) | Periodic table of the elements |
| Change that alters the form or appearance of a material but does not make the material into a new substance | Physical change |
Created by:
aaron.blake