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6th Physical Science

The basic building blocks of matter, because they are the smallest particles that can have the same properties as the stuff they make up. atoms
The 3 subatomic particles that make up atoms. protons, neutrons, electrons
Subatomic particles that have a positive electric charge and make up the nucleus of an atom. protons
Subatomic particles that have no charge (neutral) and make up the nucleus of an atom. neutrons
Subatomic particles that that have a negative charge and are surrounding the outside of the nucleus. electrons
The name given to the area where are electrons gather around a atom's nucleus. electron cloud
A pure substance that is made up of only one type of atom. element
The number of protons in the nucleus of an atom. atomic number
Letter(s) abbreviation that represents an element. chemical symbol
A characteristic of a substance that can be observed and measured without changing the identify of the substance. physical property
Elements that have some properties of metals and some properties of nonmetals. metalloids
Elements that are solid, shiny, malleable, and are good conductors of heat & electricity. metals
Elements that are mostly gases. Some types of this element can be solid, dull, and brittle. Not great conductors of heat or electricity. nonmetals
The number of protons and neutrons that make up the nucleus of an atom. mass number