Remember your

goals you set

yesterday!!

Mixing Water LabWith a little help from

Owen and Amy

Hmm…we wonder

What will happen if we mix equal

amounts of hot and

cold water – one sample is 10C and the other

one is 50C?

Write down your hypothesis and explain your reasoning

Glue worksheet on

page 45. (Hint: might want to wait until you’re

done with lab to keep it dry!)

Materials•3 foam cups•4 glue sticks•2 graduated cylinders•2 bulb pipettes•1 glass thermometer

Note: Glass thermometers are very breakable and you are responsible for replacing them (cost: $15). Keep them in your tray when not in use to prevent them from rolling off your table.

Return materials just like they are in

this picture. Thanks!

Use the pipette to get EXACTLY EQUAL measurements!!

Take temperature of water AFTER you’ve put it in the

graduated cylinders. Record.

New Prediction…

What will the resulting temperature be when you mix the 2 samples of water

you have at your table? Record your new hypothesis and

be ready to share with the class.

Mix water together in 3rd cup

Take temperature of water

And DON’T put anything in your mouth!!

Clean-up and put materials away

Record your results

A message from our sponsors

EquationsTfinal = Thot + Tcold

2

Tfinal = T1 + T2 + T3 . . . Tn

n

N = number of samples

Reflection page 44

Illustrate AND explain what you think is happening to the

particles of water when you mixed the hot and cold water.