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Unit 1.2
Science
Term | Definition |
---|---|
Atom | The smallest unit of an element that maintains the properties of that element |
Element | A substance that cannot be separated or broken down into simpler substances by chemical means |
Compound | A substance made up of atoms of two or more different elements joined by chemical bonds |
Mixture | A combination of two or more substances that are not chemically combined |
Pure Substances | a sample of matter, either a single element or compound , that has definite chemical and physical properties |
Heterogeneous | Describes something that does not have a uniform structure or composition throughout |
Homogeneous | Describes something that does have a uniform structure or composition throughout |
Solid | The state of matter in which the volume and shape of a substance is fixed |
Liquid | The state of matter which the volume is definite but not a definite shape |
Gas | The form of matter that does not have a definite shape or volume |
Freezing | A change of state from a liquid to a solid |
Melting | A change of state from a solid to a liquid |
Evaporation | A change of state from a liquid to a gas from a wide range of temperature |
Boiling | A change of state from a liquid to gas from a specific temperature |
Condensation | A change of state from a gas to a liquid |
Sublimation | The change from a solid directly to a gas |
Deposition | The change from a gas directly to a solid |