Show:
Vocabulary
Matter
Let's Mix!
Let's Separate!
Real World
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
20mL of water, 12 g of gravel, and 3 g of salt are mixed together. What is the mass of the mixture?
35 g
100
What tool can you use to separate iron filings from a mixture?
a magnet
100

Your little sister thinks that a solid is gone when it is in a solution.  Draw a picture to help her understand the solid is actually still there, even though she can't see it.

The drawing should show particles breaking apart and getting smaller and smaller.

100

How can  you separate a mixture made of sand, paper clips, and salt?  Explain which tools you will use and what material the tool will separate from the mixture. 

1) use a magnet to separate the paper clips 2) pour water into the mixture and stir to dissolve the salt 3) pour the mixture through filter paper to separate the sand 4) evaporate the water to separate the salt

200
What happens to particles when they dissolve?
they get smaller and smaller until you can no longer see them with your eye
200
What are physical properties? Give two examples.
characteristics used to describe matter - examples: size, color, texture, odor, pattern, 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?
What is 64 g
200
What tool can you use to separate sand from a wet mixture?
filter paper
200

Your little brother filled a bucket with ocean water.  He left it outside and the water evaporated.  What did he see in the bucket the next day?

Salt crystals
300
What is a solution?
a special mixture in which one of the materials dissolves into another - solutions are harder to separate
300
What is the equivalent weight of a volume of water that 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.
300

Chef Joe Joe Bob made three drinks - they are described below.  Which one is a solution, how do you know?

drink 1: a red, cloudy drink with nothing at the bottom of the glass

drink 2: a red, clear drink with nothing at the bottom of the glass

drink 3: a red, clear drink with a powdery substance at the bottom of the glass

The red, clear drink with nothing on the bottom of the glass is the solution.  It is a solution because it is clear and there is no visible solid material.

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 equivalent 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 sand and salt, how can you separate the sand? (Hint: this takes two steps)
1) pour water into the mixture and stir to dissolve the salt, 2) pour the mixture through filter paper to separate the sand
400

Suzie Q made a sugar and water solution.  What will the solution taste like after pouring it through a filter paper?  Why?

The solution will taste sweet because the sugar is dissolved in the water.  The sugar and water will both go through the filter paper because the particles are smaller than the holes in the filter paper.

500
What happens when a liquid evaporates?
the liquid changes to a gas
500
How can you identify crystals?
by their physical properties, such as size, shape, or color
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).
500

Johnny J mixed 15 g of salt with 100 mL of water.  How much does the solution weigh?  How much will it weigh after all the water evaporates?

The solution weighs 115 g.  1 mL of water = 1 g of water.  So, 100 g + 15 g = 115 g.


The solution will weigh 15 g after it evaporates because all the water has been removed.  115 g - 100 g = 15 g.