Investigation 5.1: Mixing Hot and Cold

Investigation 5.1:

Topic: Mixing Hot and Cold

In the last investigation....

we observed changes when matter in its three phases heated up and cooled down...

LET'S REVIEW

Multiple Choice

What changes did you observe when a volume of gas (air) heated up?

• the gas expanded and its volume increased

• the gas expanded and its volume decreased

• the gas contracted and its volume increased

• the gas contracted and its volume decreased

Multiple Choice

What changes did you see when a volume of gas (air) cooled?

• the gas expanded and its volume increased

• the gas contracted and its volume increased

• the gas expanded and its volume decreased

• the gas contracted and its volume decreased

Multiple Choice

Do the particles of all the phases act in the same way?

• YES

• NO

Open Ended

What happens AT THE PARTICLE LEVEL to cause expansion and contraction?

Look over at me....

in Teams!

Open Ended

Share your temperature predictions!

Be prepared to tell me why!

Please go to the discussion board on Unified classroom and discuss, with your group, how to develop a plan to test your predictions.

These are the available materials:

• Hot and cold water

• 2 Bulb pipettes

• 3 Insulated foam cups

• 2 Graduated cylinders

• 2 Glass thermometers

• 1 Plastic cup, 500 mL

• 
  

Please go to the discussion board on Unified classroom and discuss, with your group, how to develop a plan to test your predictions.

Group Results

Can you see a pattern between the starting temperatures and the final temperatures?

If we were in school the "n" would be the amount of groups we have.

Multiple Select

What happened to the hot water when it was mixed with the cold water? (pick ALL that apply)

• Hot water got cooler

• Cold water got hotter

• The particles gained kinetic energy

• The particles lost kinetic energy

Multiple Select

What happened to the cold water when it mixed with the hot water?

• Cold water got warmer

• Hot water got cooler

• The particles gained kinetic energy

• The particles lost kinetic energy

go to the whiteboard.fi link in the chat! I will keep the classroom open until 3pm for submissions