Vocabulary
Solution
What HAS to happen for us to classify a mixture as a solution?
something dissolves
not all mixtures are solutions!
If there is an accident, what is the first thing you do?
Tell the teacher
If something dissolves in water, we call it....
soluble
Is this a mixture or a solution? Why? Sugar & Water
Solution. Sugar will dissolve
Name one characteristic of a mixture.
Could be...
not evenly mixed, nothing dissolves, 2 or more things combined, see all parts, keeps physical properties
True or false: You are allowed to taste all the lab supplies.
false
What vocabulary words means "The liquid that a substances dissolves in?"
solvent
Is this a mixture or a solution? Why? iron filings and sand.
Mixture. Nothing dissolves and I can see all parts.
What could I separate with a filter?
Could be used to separate any solid from liquid
True or false: You are allowed to get out of your seat and move around the room during a lab.
False
What vocabulary word means "To form a solution by mixing evenly"
Dissolve
Knowing the particle size of the solid materials in a mixture will help you know __________?
a. how much the mixture will weigh
b. what the crystals will look like after evaporation
c. which tools to use separate the materials
d. whether one of the materials will dissolve
C
If I wanted to separate salt from water, how would I do that?
Evaporation
True or false: your hair needs to be pulled back during an experiment.
True
What vocabulary words means "To change from liquid to gas?"
Evaporation
Name 3 ways to separate mixtures!
Could be.. magnet, filter, sieve, evaporation
Explain the two ways we could know that a substance is still there even if it has dissolved and is no longer visible.
1) Mass is the same
2) Taste and color of solvent can change
List the safety equipment that you need to wear during an experiment.
Goggles, Apron, gloves