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    Science: Chemistry Quiz
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The boiling of an egg is a chemical (not a physical) ____. acidic
Sugar dissolving and ice melting are ____ changes. attract
Salts and sugars dissolve in water and thus are water ____. change
Positive and negative charges ____ each other. chemical
A solution with a pH less than 7 is ____. Fahrenheit
Iron rusting, milk souring, and wood burning are ____ changes. physical
All atoms of an element have the ____ number of protons. same
Water freezes at 32° and boils at 212° ____. soluble

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