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Vocabulary flashcards covering key physical science terms from the lesson.
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Law of Conservation of Mass
States that matter/mass cannot be created or destroyed.
Valence Electrons
Outer shell electrons.
Molecule
2 or more atoms combined together.
Atom
Smallest part of matter.
Electron
Subatomic particle with negative charge; located outside the nucleus.
Nucleus
The center of the atom.
Atomic Number
The number of protons/electrons in an atoms; usually located at the top of an element tile.
Mixture
2 or more elements and/or compounds physically combined.
Homogeneous Mixture
A mixture that looks the same throughout; cannot see the different pieces in the mixture.