Show:
Vocabulary
Matter
Let's Mix!
Let's Separate!
Final Jeopardy
100
What is a mixture?
two or more materials put together that can be easily separated
100
What are the three states of matter?
solid, liquid, and gas
100
20 g of water, 12 g of gravel, and 3 g of salt are combined. How much does the mixture weigh?
35 g
100
What tool can you use to separate iron filings from a mixture?
A magnet
100
Separate this mixture with the fewest steps possible. Explain which tools you will use and what material the tool will separate from the mixture. gravel, paper clips, powder, and salt
1) use a magnet to separate the paper clips 2) pour water into the mixture and stir 3) pour the mixture through filter paper to separate the gravel and powder 4) evaporate the water
200
What happens to particles when they dissolve?
The particles get smaller and smaller until they can no longer be seen, but they are still there.
200
What are physical properties? Give two examples.
characteristics used to describe matter such as size, shape, color, texture, odor, etc.
200
A mixture is made of 50 mL of water, 10 g of gravel, and 4 g of salt. The salt disappears. What is the mass of the mixture now?
64 g
200
What tool can you use to separate dirt from a wet mixture?
filter paper
300
What is a solution?
a special mixture in which one of the materials dissolves into the other
300
What is the equivalent weight of if a volume of water is 35 mL?
35 g
300
A solution is made of 10 g of water and 4 g of salt. The water evaporates. What is the weight of the remaining salt?
4 g
300
How do you know which tools to use when separating mixtures?
If you know the particle size then you can determine which tool to use.
400
What is a solvent?
a liquid substance that is used to dissolve another substance
400
If the mass of a container of water is 77.5 g, what is its volume?
77.5 mL
400
The left side of a pan balance has a cup with mass pieces in it (20 g, 10 g, and 5 g). The right side of the pan balance has a cup with a solution in it. The left side with the gram pieces is HEAVIER than the solution on the right. The solution on the right side must weigh _________.
Less than 35 g
400
If you have a mixture of dirt and salt, how can you separate the dirt? (Hint: this takes two steps)
1) pour water into the mixture and stir 2) pour the mixture through filter paper
500
What happens when a liquid evaporates?
the liquid changes into a gas
500
How can you identify crystals?
by their properties, such as size, shape, color, pattern, etc.
500
Identify the different parts of this drink (using the words solvent, solute, and solution): Soda = ? water = ? syrup = ? carbon dioxide gas = ?
Soda = solution water = solvent syrup = solute carbon dioxide gas = solute
500
You have 53 mL of a solution in a cup. You know the solvent is water, but you don't know what the solute is. How can you find out?
Pour some of the solution into an evaporation dish and wait for the water to evaporate. Crystals of the solute will be left. You can identify the solute by the properties of the crystals (for example, salt crystals would be square, with an X in the middle).