Physical Science

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

How many atoms of carbon are in C6H12O6?

Back

There are 6 atoms of carbon in C6H12O6.

Front

Describe the energy transformation when a hot bowl of soup is placed on a cold concrete table.

Back

Heat from the hot bowl of soup is transferred to the concrete table.

Front

What is the source of heat energy released when fuel is consumed?

Back

The heat energy is originally stored in the chemical bonds of the fuel.

Front

Is melting iron a physical or chemical change?

Back

Melting iron is a physical change.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an example of energy transformation in a light bulb?

Back

In a light bulb, electrical energy is transformed into light energy and thermal energy.

Front

What is the formula for calculating kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.