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8.P.1.1 Matter

8.P.1.1, Properties of Matter

TermDefinition
atom basic building block of life, smallest unit of an element, all matter is composed of atoms
element pure substances that have only one atom
compound made of 2 or more elements chemically combined and can't be separated
mixture physical combination of 2 or more substances that can be separated
proton a positively charged particle in the nucleus of atoms
neutron a neutral (no charge) particle in the nucleus of atoms
electron a negatively charged particle found in all atoms. It is the primary carrier of electricity in solids.
heterogeneous mixture mixture that is not uniform because you can see the individual parts in it (examples: salad, granite, iced tea)
homogeneous mixture that is uniform because it is evenly mixed and you can't see the individual parts in it (examples: air, steel, salt water)
Periodic Table A table (chart) where all chemical elements are arranged in order of increasing atomic number (number of protons in the atom)
Created by: lee.wright