Matter Test 2022

An atom can best be described as

• the smallest particle that has all the characteristics of a compound.

• the smallest particle that has all the characteristics of an element.

• a charged particle that is similar to a molecule.

• a charged particle that is larger than a molecule.

Which list contains only objects made up of atoms?

• steel, water, sand, dolphin

• light, rock, apple, squirrel

• palm tree, electricity, salt, air

• paper, vinegar, heat, helium

A sample of matter is made of identical particles. The sample could be

• an element.

• a molecule.

• an atom.

• a mixture.

The separate atoms that make up a wooden table cannot be seen because the atoms are

• too small.

• moving too fast.

• packed tightly together.

• hidden beneath the surface.

A student sees the diagram shown in a textbook. What does the symbol in the diagram represent?

• a compound

• a molecule

• an element

• an isotope

Which of the following has the ability to change the state of matter?

• heat

• wind

• light

• sound

What has occurred when bubbles form in a liquid that is being heated?

• Oxygen has been absorbed from air.

• Heat has radiated through the liquid.

• Boiling point has been reached.

• Molecular stability has increased.

Anita heats a beaker containing water. As the temperature of the water increases, which change to the water molecules occurs?

• The molecules move at a faster rate.

• The molecules become more massive.

• The molecules expand and become wider.

• The molecules separate into atoms of hydrogen and oxygen.

What happens at the boiling point of a substance?

• liquid becomes a gas

• solid becomes a gas

• liquid becomes a solid

• solid becomes a liquid

When water is changed from a liquid to a gas, what occurs?

• The atoms lose electrons.

• A new compound is formed.

• Molecules spread farther apart.

• Hydrogen is separated from oxygen.