| 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 |
