3. Matter and Energy

Pure acetic acid, which gives the sour taste to vinegar, has a melting point of 16.7 ° C and a boiling point of 118 ° C . Predict the physical state of acetic acid when the ambient temperature is 10 ° C .

Describe each of the following as a physical or chemical property:b. Hydrogen reacts readily with oxygen.

Describe each of the following as a physical or chemical property:a. Chromium is a steel-gray solid.

Describe each of the following as a physical or chemical property:e. Propane gas is compressed to a liquid for placement in a small cylinder.

Describe each of the following as a physical or chemical property:b. Apple slices turn brown when they are exposed to air.

Describe each of the following as a physical or chemical property:a. Neon is a colorless gas at room temperature.

Butane (C₄H₈) is an easily compressible gas used in cigarette lighters. It has a melting point of and a boiling point of - 138.4 degree Celsius and a boiling point of 0.5 degree Celsius. Would you expect a butane lighter to work in winter when the temperature outdoors is 25 degree F? Why or why not?

Identify each of the following as a physical or chemical property: (3.2)c. Gold is a good conductor of electricity.