Show:
Separating Mixtures
Solutions
Chemical and Physical Changes
Vocabulary
Other
100
What is a way to separate a mixture of solids?
sieves, air, water, magnets
100
What is a solution?
A mixture where the solute is dissolved into a solvent
100

What change is ice melting into water an example of?

A physical change

100
What is a solute?
The substance that is being dissolved
100
What is more dense dish soap or vegetable oil?
Dish soap is more dense
200
How can you separate nails from gumballs?
Using a magnet
200
Is a mixture of lemon juice and water a solution?
yes
200

Is adding blue food colouring to water so it turns blue and example of a reversible or irreversible change?

Physical because you can separate the food colouring because the new colour is not a new product.

200
What is a solvent?
The substance doing the dissolving
200
Name the states of matter.
solid, liquid, gas
300

When separating mixtures, are all ways equally as effective? 

No; Some methods are better than others. 

300
Is cold water or hot water better for dissolving solutes?
hot water
300

Is Diet Coke and Mentos and example of a chemical change?

Yes, because there are bubbles formed

300
What is a saturated solution?
A solution that cannot hold anymore solute
300

What are some ways you can tell liquids apart? Name at least 2. 

colour, odour, surface tension, and density. 

400
If you have a solution of sugar and water, how can you separate the dissolved sugar form the water?
By using evaporation.
400

Marbles in a bag of sand is an example of a _________ (homogeneous/heterogeneous) mixture?

Heterogeneous mixture.

400

How do you know a chemical change has happened?

There is a new substance formed, there is a colour change, there are bubbles or energy is released.

400

What is surface tension?

The top layer of atoms in a liquid which stick together to form 'beads'.

400
If liquids layer, where will the most dense liquids be?
At the bottom.
500
How do you separate paper, large rocks and staples.
You can use a magnet to separate the staples and air or water separation to separate the rocks and paper.
500

Is salad dressing a solution?

No, because not all of the ingredients are dissolved into each other. 
500

A gas fireplace is turned on and then turned off. Is this an example of an irreversible or reversible change?

A chemical change because there is a change in colour and energy is released.

500
What is a chemical reaction?
A reaction between two substances that creates a new substance.
500
What can mother nature use to separate solids?
Water and air separation