After it rains, some water is absorbed deep into the surface and becomes .
1: groundwater
2: frozen
3: invisible

An experimental procedure requires a 10 ml of acid to be dissolved

This statement about matter and its behavior is best classified as a

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds