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 |