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Hello, today I will be explaining the states of matter. There are 4 states of matter,
But when the temperature increases or decreases there could be changes in the states of matter.
A solid is a firm and stable in shape; not liquid or fluid. The molecules ina solid are close together
physical change
A liquid is a fluid which it conforms to the shape of its container
A gas is a state of matter distinguished from the solid and liquid by great expansion and contraction with changes in pressure and temperature.
Gas
A physical change is changes affecting the form of a chemical substance but not its chemical composition.
A chemical change is when the formula of a chemical substance it occurs a substance combines with another to form a new substance.
Chemical Change
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