Properties of Matter (STAAR Released Questions)

Front

Why would a student shake a bottle of salad dressing before using it?

Back

Vinegar and oil have different densities.

Front

A teacher mixes a white powder into a beaker of water. The powder cannot be seen in the water. The teacher then heats the mixture until the water evaporates and the powder can be seen again. Which property of the powder is the teacher demonstrating?

Back

Solubility

Front

Which of these is the best conductor of electricity?

• Glass rod
• Cotton string
• Plastic tubing
• Copper penny

Back

Copper penny

Front

Objects that blow into a swimming pool or that are dropped into the pool by swimmers need to be removed. These objects include foam cups, keys, and coins. Which of the following explains a useful method for removing some of these objects?

Back

The foam cups are less dense than water, so they can be removed from the surface with a pool cleaning net.

Front

Why are protective gloves necessary when lifting a metal pan filled with boiling water from a hot plate?

Back

The metal pan conducts thermal energy.

Front

Based on the table, which material would be best to use to insulate electrical wires? Options: Wood, Plastic, Copper, Steel

Back

Plastic

Front

Which property cannot be used to classify objects into more than one group? Options: Magnetism, Mass, Electrical conductivity, Solubility in water

Back

Solubility in water

Front

Identify a property to classify objects into two groups using a hand lens, a magnet, and a beaker of water.

Back

Density can be used to separate objects that sink in water from objects that do not.