Chemistry Hesi A2

What is the correct name of MgO?

A. Manganese oxide B. Magnesium oxide C. Magnesium oxate D. Magnesium hydroxide

In the solid state, you would expect a nonmetal to be _________.

A. brittle B. lustrous C. malleable D. conductive

Which substance shows a decrease in solubility in water with an increase in temperature?

A. NaCl B. O C. KI D. CaCl

A chemist takes 100 mL of a 40 g NaCl solution and dilutes it to 1L. What is the concentration (molarity) of the new solution?

A. 0.04 M NaCl B. 0.25 M NaCl C. 0.40 M NaCl D. 2.5 M NaCl

What are the products of combustion of a hydrocarbon in excess oxygen?

A. Carbon dioxide and water B. Naphthalene C. Chlorine and bromine D. Carbonium ions

Skildor