What is . . .

the

MYSTERY MIXTURE?

The Mystery Mixture• Of unknown

origin• Known to be a

safe mixture of 2 substances

• How can we find out what it is?

ALWAYS wear Goggles!!

Our eyes sure are safe!!

I bet these goggles will really protect my

eyes from burning chemicals up here on

my forehead!!

DON’T taste anything!!• Unless directed

by a teacher, NOTHING goes in your mouth

• On lab days – no food, drink or GUM permitted in classroom

Smell CAREFULLY

Let’s get started!•Obtain your materials

–Goggles for each member of your group

–Numbered tray with•2 hand lenses•2 medium, 1 small cup•2 pipettes

Record your Observations

• On Page 7 in your ISN, record your observations of the mystery mixture– What does it look like?– Be specific– Use hand lens

Adding Water• Add one pipette of

water to the mixture– Record detailed

observations and results on page 7

– Be sure to use ALL your senses

• Continue adding and recording until you see no more reactions

Reflection Page 6•Summarize your observations of the mystery mixture – what happened?

•Predict the make-up of the mystery mixture