Particles
Describe the particles of a solid.
Very tightly packed. Move in place.
What is filtration? Give an example.
Separating a solid from a liquid.
Ex) cooked noodles from the water.
What is a mixture?
A combination of materials that CAN be easily separated.
What is a solution?
A combination of materials that cannot be easily separated.
Define diluted
When there is more liquid than solid.
Describe the particles of a liquid.
Slide past each other. They move slowly.
What is sifting? Give an example.
Ex) Sifting flour, or sand and rocks
Give 3 examples of a mixture.
answers will vary
Give 3 examples of a solution.
answers will vary
Define volume.
Describe the particles of a gas.
Very fast moving, a lot of space to move.
What is magnetism? Give an example of a metal that is magnetic.
Separating items that are magnetic and non magnetic.
Ex) Iron, cobalt, nickel
True or false: A bowl of red beads is considered a mixture.
FALSEEEEEEEEEEEEEEEEEEEE
It has to be a combination of different things.
If I have a solution of milk and Nesquik, which is the solute and which is the solvent?
Solute: Nesquik
Solvent: Milk
Define mass.
How much matter something has.
Why can you move through a liquid, but you cannot move through a solid?
Because the particles of a solid are so tightly packed, they won't move. The particles of a liquid are able to move, so you can move through them.
What is chromatography? Give an example.
Separating using an absorbent material.
Ex) coffee filter and water can be used to separate the colors of black ink.
I created a mixture of tiny shavings of iron, plastic beads, and sand into a bowl. How will I separate them all out?
If I put the beads and sand in water, the beads will float and the sand will sink. I can pick the beads out with my hands and then filter the sand out of the water.
Is a solute what is dissolving, or the liquid being dissolved into?
What is dissolving
Define dissolve.
To be broken down or absorbed by something.
Does gas have volume?
YESSSSSS. It doesn't have a definite volume, but it still takes up space.
For example, a balloon filled with air.
What is flotation? Give an example of a mixture you could use flotation for?
Separating items that can float and that cannot float.
Ex) rubber ducky and rocks
When is ice cream a mixture and not a solution?
When it is solid and with another flavor. As long as it is solid, it can be easily separated from the other flavor.
If I have tea and sugar, which is the solvent? why?
The tea, it's the liquid absorbing the sugar when its dissolves.
Define the following terms.
Independent Variable
Dependent Variable
Constant Variable
IV: What you change in an experiment
DV: What you measure in an experiment
C: What doesn't change in an experiment