1.
NaCl is more commonly known as:
2.
A magnet will attract
3.
An eclipse of the sun throws the shadow of the
4.
Air is less dense than water because
5.
Salt helps to melt ice because it
6.
Substances that hasten chemical reaction time without themselves undergoing change are called
7.
The principle gas in the earth's atmosphere is
8.
Air is less dense than water because
9.
100
10.
Salt helps to melt ice because it