Name: Date: Period: Day:

Is It HOT In Here……Or Is It Just SCIENCE??

Working with your shoulder partner, pick THREE of the following questions to answer. You can use your notes to help:

1. How is temperature related to kinetic energy?

2. Do the molecules in solids move, even if we cannot feel it?

3. What happens to the molecules of a substance when it changes its state of matter?

4. How can we predict what will happen when we add or remove heat from a system?

5. When gasoline undergoes combustion in the engine of a car, what happens to its chemical energy?

6. Explain the transformation of energy in a lamp by describing what happens after the electricity leaves the wall socket.

Water Color

Three containers have three different temperature of water: 1. Room Temperature, 2. Hot, 3. Cold. The teacher will be putting two drops of food coloring into each container. Observe how long it takes each

container to fully change into one color and then answer the following questions.

Observations: Time Room Temperature: Time Hot: Time Cold:

Conclusions:

1. In which beaker of water did the food coloring spread through the water the fastest?

2. Water is made of millions of tiny water molecules. Which do you think moves faster, warm molecules or cold molecules? Why?

3. Steam is made by heating water until it boils and becomes a gas. Which do you think move faster, molecules of steam or molecules of hot water? Why?

4. Based on what you have learned about temperature and molecular movement, should you add ice or heat to a sprained ankle to prevent it from swelling? Explain your answer.

So Light it Up Up Up……I’m On FIRE!

**WARNING**

Do not try any of the following at home! This is a very dangerous experiment that is being performed in a controlled setting that has been specifically designed to handle extreme heat and reactions that may occur. Safety precautions include the use of safety goggles, lab station with heat resistant counters,

running water, a trained professional adult, emergency water shower, emergency eye wash, fire blanket, and first aid kit. Performing this experiment in your own home could result in injury to either yourself

or others and can cause damage to counters, pluming, and any other surface that the flame could come in contact with. Similar experiments are also discouraged for the well being of the child and any other

persons involved. Again, DO NOT PERFORM THIS AT HOME.

Directions:

Ms. Norris is going to set several objects on fire over her sink. While she does this, it is very important to STAY AT YOUR DESK so that no injury could occur from being too close to the flames or from accidently being pushed by another student into the flames. Safety is our #1 priority during this experiment.

As you watch the demonstrations, write down your observations in the space provided.

Then, working with your shoulder partner, answer the conclusion questions at the bottom. Turn in your work at the end of the period into the class bin.

Observations:

Conclusions:

1. What type of energy is in the solution Ms. Norris pours on the objects?

2. When Ms. Norris sets the different objects on fire, why (for the most part) do they not burn?

3. Why did the water bottle react differently than the other objects when it was set on fire?

4. List in order the energy transfers that took place when SpongeBob was set on fire.

5. How does this experiment show how chemical energy is a form of potential energy?