The pH of a substance is its relative degree of acidity or alkalinity and is measured on a scale of 0 to 14.
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Compounds are a combination of two or more atoms of different elements united chemically with a fixed chemical composition, definite proportions, and distinct properties.
Mixture can help you understand why certain cosmetic products act the way they do.
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Any substance that occupies space and has mass (weight).
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Solids have a definite size (volume) and a definite shape.
Liquids have a definite size (volume) but not a definite shape.
Gases do not have a definite size (volume) or a definite shape.
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Kidneys excrete urine
Liver discharges bile
Skin eliminates perspiration
Large intestine eliminates decomposed and undigested food
Lungs exhale carbon dioxide
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