Thermal energy and states of matter

When looking at solids, liquids, and gases how does temperature affect them? water, ice, steam. Put them in order increasing distance for the molecules.

• Ice,steam, water

• water, ice, steam

• ice, water, steam

• None of the above

How does the winter temperatures affect the air in your bike?

• No affect on the tires

• The cold makes the air molecules move slow and tires are low

• The cold make the air molecules move faster and the tires are full of air.

• The cold or hot weather has no affect.

What happens to the molecules when water is boiled?

• The decrease in kinetic energy and pressure stops the water from moving

• The change in the temperature decreased the number of particles.

• The change in temperature caused the water to rise and increase the number of particles.

• No change occurs

Which state of matter has the highest temperature?

• gas

• solid

• liquid

• They all are the same.

How can you determine how hot or cold something is?

• digital scale

• graduated cylinder

• ruler

• thermometer

How can you make a glow stick last longer?

• Put it in boiling water

• Put it in the freezer

• Put it in the refrigerator

• Leave it in the room for an hour

Sally made a hot pack using rice in a sock. She put it in the microwave for 1 minute. It did not last long. How can she make it last longer?

• Add more rice

• Increase the time in the microwave

• Remove some rice

• Decrease the time in the microwave

What type of chemical reaction absorbs energy and requires energy for the reaction to occur?

• synthesis

• endothermic reaction

• exothermic reaction

• none of the above

What type of reaction releases energy and does not require initial energy to occur

• Exothermic reaction

• Endothermic reaction

• Chemical reaction

• no reaction