Matter that has a uniform and changing composition is called a pure substance.

• True
• False

A solid cannot be compressed because its particles are tightly packed.

• True
• False

An intensive physical property is one that depends on the amount of matter present.

• True
• False

A change in state of matter is a physical change.

• True
• False

When a chemical change occurs, the products have a greater mass than the reactants.

• True
• False

An alloy, like brass, is a special type of homogeneous mixture in which a solid is mixed with a solid.

• True
• False

Filtration is a separation technique used to produce rock candy from a sugar solution.

• True
• False

The periodic table organizes elements into a grid of vertical columns known as periods.

• True
• False

The change in the color of tree leaves in fall is an example of a physical change.

• True
• False

Mendeleev’s original table could accommodate elements that did not even exist.

• True
• False