A banana is yellow.

A sheet of copper can be pounded into a bowl.

Barium melts at 725 C.

Gasoline is flammable.

A diamond is the hardest natural substance.

Helium does not react with any other element.

A bar of lead is more easily bent than is a bar of aluminum of the same size.

Potassium metal is kept submerged in oil to prevent contact with oxygen or water. This is to which of its properties?

An apple will turn brown if it is left in oxygen.

Diamond dust can be used to cut or grind most other materials.

Acid in tomato sauce can corrode aluminum foil.

Rocks containing carbonates can be identified because they fizz when hydrochloric acid is applied.

A piece of charcoal, which is mostly composed of the substance carbon, when heated it glows red, gives off heat, and becomes a gray ash.