Understanding Changes in States of Matter

What is the main focus of the experiment discussed in the video?

• The influence of sound on animal behavior

• The role of water in chemical reactions

• The impact of temperature on the change of state in matter

• The effect of light on plant growth

What happens to thermal energy when it decreases?

• It makes the matter warmer

• It causes the matter to expand

• It makes the matter colder

• It has no effect on the matter

What is the process called when a gas turns into a liquid?

• Evaporation

• Condensation

• Sublimation

• Melting

What is the result of decreasing thermal energy in a gas?

• The gas turns into a liquid

• The gas turns into plasma

• The gas remains unchanged

• The gas turns into a solid

What is the process called when a liquid turns into a solid?

• Melting

• Freezing

• Evaporation

• Sublimation

Which process involves a solid turning directly into a gas?

• Freezing

• Melting

• Condensation

• Sublimation

What is the term for adding heat to a solid to turn it into a liquid?

• Sublimation

• Condensation

• Melting

• Freezing

What happens to a liquid when it is heated and turns into a gas?

• It undergoes condensation

• It undergoes sublimation

• It undergoes freezing

• It undergoes evaporation

In the experiment, what was observed when the balloon was placed in hot water?

• The balloon expanded

• The balloon shrank

• The balloon remained unchanged

• The balloon burst

What was the purpose of using different temperatures of water in the experiment?

• To test the effect of light on the balloons

• To see how temperature affects the physical state of matter

• To measure the speed of evaporation

• To observe the chemical reaction between yeast and sugar