Chlorine is a poisonous gas. When chlorine gets together with sodium, it forms a white solid called salt, which people eat every
day. From this information, you can tell that salt is a
(1) simple mixture
(2) poison
(3) compound
(4) solution
(5) solvent

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

1. list three scientific reasons cockroaches may fly.

What is the independent variable in this investigation? mass volume sample number substance density