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WorksheetsPure Substance Check In #2
Total questions: 21
Worksheet time: 11mins
When you put sugar in water, it...
...dissolves.
...melts.
...evaporates.
When a solute dissolves in the solvent where do the solute particles go?
They go in between the particles of the solvent.
They just sink to the bottom.
They evaporate and leave the mixture.
They join with the solvent particles.
Why EXACTLY will rocks not dissolve in water?
Rocks are a solid because the particles are so close together.
The rock particles are more attracted to themselves than the water particles.
They are too hard.
Rocks are not a pure substance.
In a homogenous mixture, there tends to be more...
...solute.
...solvent.
What is the universal solvent?
Water
Oil
Ethanol
Mountain Dew Baja Blast
Name the type of mixture: 10L of milk, 0.5 ml of chocolate milk mix.
Dilute
Concentrated
Saturated
Super Saturated
Name the type of mixture: I added salt to water and the salt stopped dissolving.
Dilute
Concentrated
Saturated
Super Saturated
A hot solvent will dissolve more solutes because....
(Select all the correct answers)
The solvent particles are closer together.
The solvent particles are moving faster.
The heat makes the solute stronger.
The solvent particles are more attracted to the solute.
The solvent particles are farther apart.
In a concentrated solution...
...solutes fill some of the available spaces.
...solutes will fill most of the available spaces.
....solutes will fill all of the available spaces.
Name the type of heat transfer:
Heat is transferred from one substance to another through direct physical contact.
Conduction
Convection
Radiation
Name the type of heat transfer:
Heat is transferred when warm and less dense gas or liquid moves upwards to make room for cold and denser gas or liquid.
Conduction
Convection
Radiation
Name the type of heat transfer:
Heat travels through air or a vacuum from an object that radiates heat to another that absorbs it.
Conduction
Convection
Radiation
Why is air such a good insulator?
The air particles are far apart.
Air is not very heavy.
You can't see air.
The air particles are not attracted to heat particles.
Select the best insulator.
A vacuum.
Wood
Air
Plastic
Metal
Why is my attic warmer than my basement?
Conduction
Convection
Radiation
Select the best conductor.
A vacuum.
Wood
Air
Johann Sebastian Bach
Metal
Which is an example of radiation AND convection?
Warming your hands over a fire.
A microwave cooking food.
The sun warming the earth.
A hot air balloon.
When you are measuring heat, what are you measuring?
How many particles are in an object.
How fast the particles in an object are moving.
The colour of the object.
...none of the above.
If you want to make something colder, you should...
...add more cold energy.
...remove heat particles.
...put it in an insulator.
...none of the above.
If you want to make something hotter you should...
...add heat particles.
...increase the speed of the particles.
...remove cold energy.
...all of the above.
Select the best insulator against radiation.
Air
Copper
A mirror
Athletic Shirt
