Parts of a substance that are not used are
1)gasoline
2)waste
3)gas
4)acid
5)greenhouse
6)particles

i think it is true since you can test the answer and can use observations to complete it.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.