Introduction to Matter

One example of a physical change is

• burning paper.
• baking cookies.
• dissolving salt in water.

One example of a chemical change is

• filtering.
• burning wood.
• crushing a can.

The energy of matter in motion is called

• kinetic energy.
• potential energy.
• chemical energy.

Radio waves, visible light from the sun, infrared “rays” from heat lamps, the waves that heat food in a microwave oven, ultraviolet rays, and X-rays are all considered types of

• electrical energy.
• electromagnetic energy.
• chemical energy.

Table sugar and table salt are examples of

• atoms.
• elements.
• pure substances.

Substances that CANNOT be broken down chemically into other substances are

• elements.
• compounds.
• mixtures.

The measurement of the force of gravity on an object is the object’s

• mass
• volume
• weight

The measurement of how much matter an object contains is its

• volume.
• weight.
• mass.

The measurement of how much mass is contained in a given volume is called

• weight.
• melting point.
• density.

The density of a block of wood with a volume of 50 cubic centimeters and a mass of 100 grams in

• 2 g/cm³
• 0.5 g/cm³
• 500 g/cm³