Student Resources—746

Extra Try at Home Labs
Extra Try at Home Labs
770 STUDENT RESOURCES
(t)John Evans, (b)Mark Burnett
A Good Mix?
Real-World Question
What liquids will dissolve in water?
Possible Materials
• cooking oil • spoon
• water • glass
• apple or grape juice • measuring cup
• rubbing alcohol
Procedure
1. Pour 100 mL of water into a large glass.
2. Pour 100 mL of apple juice into the glass
and stir the water and juice together.
Observe your mixture to determine
whether juice is soluble in water.
3. Empty and rinse out your glass.
4. Pour 100 mL of water and 100 mL of
cooking oil into the glass and stir them
together. Observe your mixture to
determine whether oil is soluble in
water.
5. Empty and rinse out your glass.
Microscopic Crystals
Real-World Question
What do crystalline and non-crystalline
solids look like under a magnifying lens?
Possible Materials
• salt or sugar • bowl
• pepper • spoon
• magnifying • measuring cup
lens
• paper
6. Pour 100 mL of water and 100 mL of
rubbing alcohol into the glass and stir
them together. Observe your mixture to
determine whether alcohol is soluble in
water.
Conclude and Apply
1. List the liquid(s) that are soluble in water.
2. List the liquid(s) that are not soluble in
water.
3. Infer why some liquids are soluble in
water and others are not.
Procedure
1. Pour 10 mL of salt into a bowl and grind
the salt into small, powdery pieces with
the back of the spoon.
2. Sprinkle a few grains of salt from the
bowl onto a piece of paper and view the
salt grains with the magnifying lens.
3. Clean out the bowl.
4. Pour 10 mL of pepper into the bowl and
grind it into powder with the spoon.
5. Sprinkle a few grains of pepper from the
bowl onto the paper and view the
grains with the magnifying lens.
Conclude and Apply
1. Compare the difference between the salt
and pepper grains under the magnifying
lens.
2. Describe what a crystal is.
Adult supervision required for all labs.