7th Mid-term SG #1

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

Which state of matter has the least thermal energy?

Back

Solid state generally has the least thermal energy compared to liquids and gases.

Front

In which state of matter do molecules move the fastest?

Back

Molecules move the fastest in the gas state.

Front

What is a chemical change?

Back

A chemical change occurs when substances react to form new substances with different properties.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

How does thermal energy move between objects?

Back

Thermal energy moves from an object at a higher temperature to an object at a lower temperature.

Front

What happens to thermal energy when ice is placed in a warm drink?

Back

The thermal energy moves from the warm drink to the ice, causing the drink to cool down.

Front

What is the relationship between temperature and thermal energy?

Back

As the temperature of a substance increases, its thermal energy also increases.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change, as it reacts with oxygen to form ash and gases.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, as it changes from solid to liquid without altering its chemical structure.