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Defend Earth from alien invaders
Anything that has mass and volume
Substances that are put together without being chemically combined
A well mixed combination of two or more substances
A roughly mixed combination of two or more substances
Substance that has only one type of particle or material
Substance made up of only one type of atom. It is in its simplest form.
Two or more different types of elements that are chemically bonded together
Smallest particle of an element with all of its properties
The smallest particle of a compound with all of its properties
A way of showing information about the atoms in a particular compound
Any property used to characterize matter, energy, and their interactions
Any properties that characterize materials in reactions that change their identity
Two or more metals that form a solution
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