physical & chemical properties

The mass of a rock is measured with a balance. The rock is then broken into many smaller pieces and the total mass of all the pieces is measured again. Which of the following sentences about the mass is TRUE?

• The mass of the rock will be greater than the total mass of the smaller pieces.

• The mass of the rock will be less than the total mass of the smaller pieces.

• The mass of the rock will be same as the total mass of the smaller pieces.

• The mass of the rock will not be the same as the total mass of the smaller pieces.

A glass marble and a piece of cork of the same shape and size are dropped in water. Which of the following explains correctly why the glass marble sinks while the cork piece floats on water?

• The glass marble is denser than water while the cork is less dense than water.

• The glass marble is less dense than water while the cork is denser than water.

• The glass marble and the cork are both denser than water.

• The glass marble and the cork are both less dense than water.

The same quantity of sugar and sand are added to a glass of water and stirred. After some time the sugar particles cannot be seen while sand particles settle down. Based on the observations, which of the following statements is TRUE?

• Sugar is soluble in water while sand is not.

• Sand is soluble in water while sugar is not.

• Both sugar and sand are soluble in water.

• Both sugar and sand are not soluble in water.

A student was working with 50 mL of water in an experiment. Which of the following statements can be concluded from the picture?

• The volume of a liquid changes when the shape of its container changes.

• The mass of a liquid changes when the shape of its container changes.

• The volume of a liquid stays the same when poured from one container to another container.

• The temperature of the liquid changes as the shape of the container changes.

Which of these objects is an insulator?

• Copper Wire

• Oven Mitt

• Paper Clip

• Soda Can

Which of the following best represents the three states of matter?

• Picture A

• Picture B

• Picture C

• Picture D

Identify which item below best completes the table.

• Glass Window

• Gold Ring

• Paper Bag

• Styrofoam Cup

Four spoons made of different materials are placed in a bowl of hot soup for the same time. Which one could you safely use to stir the soup without burning your fingers?

• Steel Spoon

• Silver Spoon

• Wooden Spoon

• Copper Spoon

Even though an iceberg and the water that surrounds it are made up of the same substance, the iceberg is able to float. Why is the iceberg able to float?

• The volume of the iceberg equals the volume of an equal mass of water.

• The mass of the iceberg is greater than the mass of an equal volume of water.

• The iceberg is less dense than liquid water so it floats.

• The mass of the iceberg is less than the mass of an equal volume of water.

Label the following as either a physical or chemical property. Thermal conductivity—the rate thermal energy spreads through a substance

• physical property

• chemical property