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    Science: Chemistry Quiz
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Elements in the same group tend to have the same ____. activation
A catalyst decreases the ____ energy of a reaction. charge
A salt contains anions and cations, but has no net ____. density
The ____ of water is about one gram per cubic centimeter. hydrogen
A solute is dissolved in a solvent to form a ____. nonmetal
When some metals react with acids, ____ gas is released. solution
To dilute an acidic solution, slowly add it to ____ while stirring. valence
Carbon, oxygen, and sulfur are examples of ____ elements. water

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