Chemistry quiz chapter 3

Which of the following items is a mixture? water brass none of the above helium sugar

brass

If a particular process is endothermic, the reverse process must be a (an): exothermic process. isothermal process. chemical change. endothermic process. none of the above

exothermic process.

Which of the following items is a pure substance? none of the above seawater ice brass air

ice

Which type of energy is associated with motion? kinetic potential none of the above electrical chemical

kinetic

How would you classify salt water? mixture-heterogeneous pure substance-element mixture-homogeneous none of the above pure substance-compound

mixture-homogeneous

If you hold a solid piece of pure gallium metal in your hand, your body heat will melt the gallium into its liquid form. This illustrates which of the following? distillation chemical property chemical change none of the above physical change

physical change

Which of the following is a heterogenous mixture? milk none of the above raisin bran air sugar water

raisin bran

Which of the following items is a physical property? the tarnishing of a copper statue the corrosive action of acid rain on granite none of the above the combustion of gasoline the odor of spearmint gum

the odor of spearmint gum

Which of the following items is a chemical property? the odor of spearmint gum the tarnishing of a copper statue the melting and boiling point of water none of the above the paint color on a new red Corvette

the tarnishing of a copper statue

Physical properties are: identical for all solid matter. none of the above those that a substance displays only through changing its composition. those that cause atoms and molecules to change. those that a substance displays without changing its composition.

those that a substance displays without changing its composition.