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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
Which of these terms best describe a substances ability to be dissolved?
Density
Solubility
Insolubility
Conductivity
- 9. 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
- 10. Multiple Choice
True or False? A solution can be made by combining vegetable oil and water.
True
False
- 11. 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
- 12. 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
- 13. 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
- 14. 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
- 15. 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
- 16. Multiple ChoiceTo break down into tiny pieces to small to be seen.solutesolventdissolvesolution
- 17. Multiple Choicecharacteristics that can be used to classify mattermixturesolutionsolutephysical property
- 18. Multiple ChoiceIf I added 27 grams of salt to water and separated the solution with a hot plate, what amount of salt would be left behind?20 grams0 grams27 grams10 grams
- 19. Multiple ChoiceIf you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?FilterScreenMagnetEvaporation
- 20. Multiple Choice__________ is the ability of an object to float or sink in waterSolubilityRelative DensityMagnetismMass
- 21. Multiple ChoiceWhen we put a substance in water and stir it to see if it dissolves we are testing for_______________________.Relative DensitySolubilityMassTemperature
- 22. Multiple ChoiceThe process of a liquid turning into a gas when heat is added.condensationmeltingevaporationfreezing
- 23. Multiple ChoiceWhich of the following, if added to water, will change shape?saltsandwoodglass
- 24. Multiple ChoiceWhich example below describes a simple mixture where the ingredients maintain their physical properties?bucket of saltwater and sandpeanuts, raisins, and chocolate piecessugar and waterall of the above
- 25. Multiple ChoiceWhich list below shows objects in a mixture that could best be separated using the physical property of relative density?iron filings and sugarlarge plastic beads and small plastic beadsquarters and penniesplastic buttons and metal buttons
- 26. Multiple ChoiceYou have the following solids in a lab: salt, sand, lemonade powder, and pepper. Which solids will dissolve in water to create a solution?pepper, sand, and saltsalt, lemonade powder, and sandsalt and lemonade powderpepper and sand
- 27. Multiple ChoiceWhich property of tea changes when it is mixed with sugar?colortasteshapestate
- 28. Multiple ChoiceWhat tool can you use to separate cooked macaroni and boiling water?filtermagnetcolandercraft stick
- 29. Multiple ChoiceWhat tool can you use to separate a mixture of rocks and sand the fastest?sievetweezersmagnethands
- Answer choicesTagsAnswer choicesTags