Flashcard on Properties of Matter

Front

What is the net force when a dog pulls forward with 100 N and the owner pulls backward with 110 N?

Back

10 N backward

Front

What type of energy transfers across Earth’s surface during an earthquake?

Back

Kinetic energy

Front

What type of waves carry energy across the surface during an earthquake?

Back

Transverse waves

Front

What is the product of a chemical change that appears on a black iron chair left outdoors?

Back

A red substance (rust)

Front

Why do batteries in LED flashlights last longer than in old-fashioned light bulbs?

Back

Less electrical energy is transformed into thermal energy as heat.

Front

What is a homogeneous mixture?

Back

A mixture with a uniform composition.

Front

What is a heterogeneous mixture?

Back

A mixture that does not have a uniform composition.

Front

What is the difference between potential energy and kinetic energy?

Back

Potential energy is stored energy; kinetic energy is energy of motion.

Front

What happens to energy in a closed system during a chemical reaction?

Back

Energy is conserved; it can change forms but is not lost.

Front

What is thermal energy?

Back

The energy that comes from the temperature of matter.