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- 1. Multiple Choice
The mixture shown here -
Maintains its physical properties when combined
Dissolves after being stirred together
Will evaporate after a certain period of time
Cannot be separated into ingredients
- 2. Multiple Choice
Which of the following is NOT happening in the photo
The temperature is rising
Heat is being added
Thermal energy is taken away
A solid is turning into a liquid
- 3. Multiple Choice
The bobber is able to float in the water because -
It has a greater density than the water
It is too heavy to sink to the bottom
It mass will not allow it to sink
Its density is less than water
- 4. Multiple Choice
Which of the following is true about solutions?
The particles of the solute become very small
Evaporation can be used to separate solutions
The substance spreads out evenly
All of these options are true
- 5. Multiple Choice
The oven mitt shown here is being used because
The mitts conduct thermal energy
The pan conducts heat energy
The pan is an insulator
The mitts make the cook look cool
- 6. Multiple Choice
When condensation occurs
Heat energy is being reduced
Thermal energy is added
The temperature is increasing
A solid is turning to liquid
- 7. Multiple Choice
Which term best describes a liquid turning in a gas
Melting
Condensation
Evaporation
Freezing
- 8. Multiple Choice
In order for the wax on the sculpture to melt, what must happen?
The temperature must fall
Energy should be removed
The temperature must stay the same
Heat must be added
- 9. Multiple Choice
Pick two items that you know to be non magnetic
Copper penny
Iron Nail
Paperclip
Aluminum foil
- 10. Multiple Choice
Which of these terms best describe a substances ability to be dissolved?
Density
Solubility
Insolubility
Conductivity
- 11. Multiple Choice
A solution is made using 100 ml of water, and 20 g of salt. What is the best way to separate this solution
Pour the mixture through a strainer
Add 100 ml more of water
Use a coffee filter
Evaporate the water on a hot plate
- 12. Multiple Choice
True or False? A solution can be made by combining vegetable oil and water.
True
False
- 13. Multiple Choice
Which ingredient of the soda has the fastest moving particles?
Ice cubes
Liquid water
Carbon dioxide bubbles
Corn syrup
- 14. Multiple Choice
During condensation -
Solid water is turning to liquid
Water vapor in the air is turning into liquid
Liquid water is becoming a solid
Liquid water is becoming a gas
- 15. Multiple Choice
Students pour 4 different substances into 4 different containers and stir them to see what will happen? Which of the following will be the least likely to dissolve?
Sand
Salt
Food coloring
Sugar
- 16. Multiple Choice
The most ideal way to separate this mixture of sand and water is to -
use a hot plate
pour the mix through a strainer
shake the mixture rapidly
pour the mix through a coffee filter
- 17. Multiple Choice
Which material would not remain very hot after being removed from a pot of boiling water?
Wooden spoon
Silver dollar
Copper tubing
Steel Nail
- 18. Multiple Choice
5 grams of salt is dissolved in 50 milliliters of water. Shortly after, the water is evaporated on a hot plate. How many grams of salt will be left in the container?
0 grams
2.5 grams
5 grams
10 grams
- 19. Multiple Choice
An item has been identified as being a good conductor, magnetic, and not soluble in water. It is also more dense than water. What could it be?
Aluminum can
Iron nail
Copper penny
Rubber eraser
- 20. Multiple Choice
Which of the following would cause the powder to dissolve more quickly?
Let the powder sit in the bottom undisturbed
Reduce the temperature of the water
Stir the powder in the water rapidly
Increase the size of the particles in the mix
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