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g7 2.3
7th Grade STEMscopes CA Segment 2 Scope 3
Term | Definition |
---|---|
Atom | The smallest particle of an element; made of electrons, protons, and neutrons |
Chemical Equation | Chemical formulas and symbols written to represent a reaction |
Chemical Formula | A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type and number of atoms that are present in the smallest unit of a substance |
Chemical Process | Method or means of changing one or more chemicals or chemical compounds |
Chemical Reaction | The process by which one or more substances change to produce one or more different substances |
Coefficient | A number placed in front of a chemical symbol or formula that represents the number of molecules |
Conserve | To prevent the loss of something |
Law of Conservation of Matter | Scientific law stating that the mass of all reactants must equal the mass of all products; matter is neither created nor destroyed |
Mass | A measure of how much matter is present in a substance |
Molecule | The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically |
Product | A substance produced during a chemical reaction |
Properties | Physical and chemical characteristics of matter used to describe or identify a substance |
Reactant | A substance that takes part in and undergoes change during a chemical reaction |
Subscript | A number written below and to the right of a chemical symbol that shows the number of a specific type of atom present |