Substances and properties
Today‘s topics
A chemist‘s definition of the term „substance“
Substance properties
Using substance properties to
identify unknown substances
The unlabeled samples
„Substance“
Substance (Stoff) is the term
used to identify all materials that make up our world
We can compare properties of the samples with substances we know
Examples for substance
properties:
Planning the experiment
Pick one group card and form a group with everyone else who picked the same number
Pick up your group’s sample box
Figure out ways to test your samples for the properties listed on your group card. Don’t experiment yet!
Use the reverse of your worksheet to write them down
You may include any equipment that is on the desk in your planning
If you need hints, there are hint cards with the teacher
Once you are done, please check your plan with a teacher
Once the teacher has approved your plan you may pick up the next worksheet, safety glasses and your equipment and start
