Which of the following describes a chemical property of matter? a. Helium does not form compounds. b. Mercury will not soak into a paper towel. c. Table salt will dissolve in water. d. Water expands when it freezes.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Which other elements contain the same number of outer electrons as sodium

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