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Matter (Types of atoms (Compound (2 or more different elements that are…
Matter
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Changes
Chemical Change (Irreversible, produces something new)
Physical Change (Reversible, keeps the same product)
Diffusion
The process of particles in an area of high concentration mixing out into low concentration throughout a substance. This happens because the particles bump into one another and generate energy.
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Expansion
The process of particles gaining energy and moving around quicker. They bump into one another and so move further apart.