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WorksheetsParticle Theory/Heat
Total questions: 28
Worksheet time: 14mins
The more energy particles have...
the faster they move.
the farther apart they tend to be.
the hotter they are.
All of the above
100% pure orange juice is an example of a homogeneous mixture.
True
False
Why does a solvent (water) dissolve a solute (sugar) faster when it is hot?
There is more space between the particles of the solvent.
The solute particles get "bumped" more by the solvent.
The solvent particles are moving faster.
All of the above.
What is the BEST answer to why metal is hard?
It is a solid.
The particles are very attracted to each other so they are much closer together (denser).
It is metal and metals are hard.
It is a conductor.
When a solute (sugar) dissolves in a solvent (water), where do the solute particles go?
In between the solvent particles.
The solute combines with the solvent particles.
The solute disappears.
It floats to the bottom.
The substance in a mixture that DISSOLVES that there tends to be less of is called...
the solute.
the solvent.
Why does a solute (sugar, salt, etc.) dissolve into a solvent (water, ethanol, etc.)
They fit together like puzzle pieces.
The solute is more attracted to the solvent than it is to itself.
Because the particles melt.
The particles join together.
A mixture that only has a very small amount of solute is referred to as...
Dilute
Concentrated
Saturated
Super Saturated
Which of the following is a heterogeneous mixture?
Sugar and Water
Salt and Ethanol
Oil and Ethanol
Juice Crystals and Orange Juice
Particles (atoms and molecules) will...
...eventually reach absolute zero.
...touch when heated.
...never stop moving.
...sublimate.
A super saturated solution is a mixture that...
...dissolves more solute than it usually can because it is heated.
...only dissolves a small amount of solute.
...does not dissolve any solutes.
...is volatile and may be dangerous.
Matter...
...takes up space and has mass.
...is the universal solvent.
...does not reflect light.
...is the best kind of insulator.
You know you have a heterogeneous mixture if...
...you CAN see the separate parts and you CAN separate them by hand.
...you CANNOT see the separate parts and you CANNOT seperate them by hand.
...you CAN see the separate parts and you CANNOT separate them by hand.
...you CANNOT see the separate parts and you CAN separate them by hand.
Why do particles come closer together when they loose energy?
...the attractive forces between the particles pull them back together.
...they dissolve.
...they become a solid.
...they are more attracted to the solvent than the solute.
What is the best way to prevent heat transfer by CONDUCTION?
Make the object shiny and white.
Use a material where the particles are far apart.
Use a fan to circulate the gas or liquid.
Insulate the top of the object.
What is the best way to prevent heat transfer by RADIATION?
Make the object shiny and white.
Use a material where the particles are far apart.
Use a fan to circulate the gas or liquid.
Insulate the top of the object.
Which of the following is an element?
Gold (Au)
Water (H2O)
Glucose (C6H12O6)
Carbon Dioxide (C02)
Why is air such a good heat insulator?
The particles are far apart.
It is cheap and easy to get.
It does not take up much space.
It does not weigh very much.
When you are measuring temperature, what are you measuring?
How fast particles are moving.
How far apart the particles are.
How many cold particles there are.
How attracted the particles are.
Why will the colour black absorb more radiation than lighter colours?
It bounces all the colours of the rainbow.
It absorbs all the colours of the rainbow
It bounces the colour black.
Particles are most dense when matter is....
...hot.
...cold.
...shiny.
...black.
When the temperature is increased the volume of matter (amount of space it takes up) will...
...increase.
...decrease.
...stay the same.
Which of the following is a compound?
Gold (Au)
Potassium (K)
Glucose (C6H12O6)
Hydrogen (H)
When ethanol and salt are mixed, which one is the solute?
Ethanol
Water
There is no solute.
What is the universal solvent?
Ethanol
Sugar
Water
Salt
Air
What is another name for an element?
Atom
Molecule
Compound
Separating Mixtures: Turning a liquid into a gas to separate it from another from another substance.
Evaporation
Filtration
Density
Magnetism
Separating Mixtures: The use of a substance's greater mass per volume to separate it from other substance in a mixture.
Evaporation
Filtration
Density
Magnetism
