Matter

Which phrase describes the mass of an ice cube?

• A. amount of space that the ice cube occupies

• B. estimation of the weight of the ice cube

• C. total amount of water in the ice cube

• D. value obtained by multiplying its length times width times height

Which claim is true of all matter?

• A. It has mass.

• B. It can be seen.

• C. It exists only as a solid.

• D. It maintains its shape and size.

When a helium balloon rises in the air, it expands. If the volume of the balloon doubles, which claim describes what happens to the density of the helium inside it?

• A. The density triples.

• B. The density doubles.

• C. The density stays the same.

• D. The density decreases by half.

Paul placed an ice cube into a beaker on a hot plate. The ice cube changed from a solid to a liquid and then to a gas. During this process, which property of the ice cube remained unchanged?

• A. density

• B. mass

• C. temperature

• D. volume

A metal coin has certain properties that can be measured. Which property of a coin is different on the moon than it is on Earth?

• A. density

• B. mass

• C. volume

• D. weight

Imagine that the block shown is made of pure gold.

If Ana cuts this block into two equal pieces, which of these claims can be supported by the evidence?

• A. The mass of each piece is the same as that of the original block.

• B. The weight of each piece is the same as that of the original block.

• C. The density of each piece is the same as that of the original block.

• D. The volume of each piece is the same as that of the original block.

Josie partially filled a graduated cylinder with water. She then dropped a rock into the water.

The illustration shows what happened to the level of the water inside the graduated cylinder.

What is the volume of the rock?

• A. 5 mL

• B. 10 mL

• C. 35 mL

• D. 40 mL

Each element is made up of different atoms. The table below compares two elements.

What do the elements in the table have in common?

• A. Atoms in each element have 10 nuclei.

• B. Atoms in each element have 10 protons.

• C. Atoms in each element have 10 neutrons.

• D. Atoms in each element have 10 electrons.

A substance contains an arrangement of different types of atoms joined together by chemical bonds. Which of the following classes of substances could this describe?

• A. all matter

• B. all elements

• C. all compounds

• D. all pure substances

Ted wants to know the average atomic mass of calcium. He knows that the letters Ca stand for calcium. He found the entry for calcium, Ca, in Period 4 of the periodic table. The diagram shows this entry.

Which of the following numbers should Ted identify as the average atomic mass of calcium, Ca?

• 4

• 20

• 40.078

• 60.078