Answer:
It just means that you are supposed to find an object that is not used in a vacuum. For example, a hair-brush is not use in a vacuum lol
The spoon will get warmer as it takes in the heat of the water
Glycerol (potassium hydroxide)
Answer:
D.
Explanation:
If a compound is composed of oppositely charged ions, it has to be formed by metal and non-metal.
Li2O
Li - metal
O - non-metal