Font size
WorksheetsChanges of Matter
Total questions: 66
Worksheet time: 1hrs 18mins
Solid can change into a liquid. It is called___________________.
Freezing
Melting
Condenses
Evaporates
Liquids can change into gases. It's called ____________.
Freezing
Condenses
Evaporates
Melts
By cooling a gas, can change it to a liquid. When gas change to liquid, it's called _________________.
Condenses
Evaporates
Melts
Freeze
Choose the picture below that showed the canges of gases to liquids (Condences)
What happens to a liquid when it is heated?
Boiling and change into gas
Melting and change into liquid
Freezing and change into solid
Condences
What is a reversible change?
Something you can change back.
Something you cannot change back.
Burning of candle wax is a ________change
Reversible change
Irreversible change
Melting of butter is a _______________ change
Reversible change
Irreversible change
Rusting of iron is a _______________ change
Reversible change
Irreversible change
Frying an egg to make an omelette is a _______________ change
Reversible change
Irreversible change
Evaporation of water is a _______________ change
Reversible change
Irreversible change
Boiling of rice is a _______________ change
Reversible change
Irreversible change
What is an irreversible change?
Something you can change back.
Something you cannot change back.
Which of these is NOT a reversible change?
Solvent
Solution
The process by which one or more substances change to produce one or more different substances
Product
Reactant
Chemical Reaction
Solution
The starting materials in a chemical reaction _________
Solute
Solvent
H2 + O → H2O
During a reaction, atoms are
created
destroyed
neither created or destroyed - just rearranged
A chemical reaction is when...
Atoms and molecules are destroyed
Atoms and molecules are created
Atoms and molecules break apart and regroup to form new products
Atoms and molecules go on vacation and relax a little
What are some examples of insulators?
silver, iron, cooper
metal spoon, penny, aluminum
rubber, glass, wood
gold, wire, nails
A student is having a problem getting a light bulb to light up in an electrical circuit. They notice there is a gap in the wiring but there is not enough wire to complete the circuit. What could the student do to fix the problem?
put a rubber handle in the gap
use a piece of of nylon rope to attached the wires together
change the battery or the light bulb
attach a paperclip to the wires in between the gap
A material that prevents heat or an electric current from flowing
Conductor
Insulator
Magnetism
Electric Circuit
This girl is wearing pink wool earmuffs to keep her ears warm in the snowy weather. Differentiate between conductors and insulators. How does the wool affect heat transfer? (wool is a type of fabric)
The wool is a conductor that transfers heat from her ears to the wool earmuffs.
The wool is an insulator that provides heat to keep the girl's ears warm.
The wool is a conductor that transfers heat from the girl's earmuffs to her ears.
The wool is an insulator that keep the girl's ears from loosing heat.
Which is TRUE about an insulator?
It can be a good conductor.
It allows heat to pass through easily.
It slows energy transfer.
It provides heat to keep materials warm.
Which of the following is a group of items that can be used to conduct electricity?
paper clip, nail and penny
paperclip, nail and cardboard
rubber-band, eraser, and cotton ball
rubbe- band, paperclip and nail
When sublimation occurs, what is the change in the state of matter?
Gas to liquid
Gas to solid
Solid to gas
Solid to liquid
What happens to the energy of the particles during sublimation?
Gain energy
Lose energy
What happens to the speed and spacing of the particles in the dry ice during sublimation?
Faster, closer together
Faster, farther apart
Slower, closer together
Slower, farther apart
Which phase changes GAIN energy as they happen?
SELECT ALL THAT APPLY
Condensation
Evaporation
Freezing
Melting
Sublimation
Which phase changes LOSE energy as they happen?
SELECT ALL THAT APPLY
Condensation
Evaporation
Freezing
Melting
Sublimation
Dry ice and water ice both melt when they are heated.
TRUE
FALSE
As a part of the water cycle, water from Earth's surface enters the clouds and finally falls back to the ground in the form of rain. What is the correct sequence of processes water undergoes?
Evaporation, Condensation, Precipitation
Precipitation, Condensation, Evaporation
Condensation, Evaporation, Precipitation
Evaporation, Precipitation, Condensation
What is D?
What tool would best help you sort iron from sand?
What tool would best help you sort coffee?
Mixtures are created when two or more ______ are mixed together.
liquids
changes
substances
rocks
_____ means to spread out evenly in a liquid.
melt
dissolve
mix
______ means to combine together.
stir
distribute
mix
solute
Mixture or Solution?
Mixture
Solution
Mixture or Solution?
Mixture
Solution
A substance that dissolves another substance is called ….
solute
solvent
solution
substances
Hot coffee is the mixture of coffee powder, sugar, and water. The correct statement of the mixture is ….
A. water is solute, sugar and coffee powder are solvent
B. sugar and water are solutes, coffee powder is solvent
C. coffee powder and water are solutes, sugar is solvent
D. sugar and coffee powder are solutes, water is solvent
The substance in label a is as the ....
solute
solvent
solution
mixture
Jacob added 50mL of salt to 250mL of water. He stirred it until it completely dissolved. He was asked by Mr. Lopez to separate the salt from the water. After the water evaporated how much salt was left in the beaker?
There was 300mL left in the beaker.
There was 50mL left in the beaker.
There was 200mL left in the beaker.
There was no salt left in the beaker.
Isabella accidentally left the beaker full of salt water boiling on a hot plate. When she came back she shut it off and this is what was left. What is it?
It is salt that was placed in there after she left.
It is salt that was left behind due to evaporation.
It is the excess salt that did not evaporate with the water.
It is an unknown substance.
10 g of lemon powered was added to a bottle of water. What physical properties have changed?
smell, taste, mass, color
smell, density, state of matter
smell, color, taste, length
smell, color, taste, width
What happens when water mixes with sugar?
the appearance of sugar changes
the shape of water changes
the taste of sugar changes
the state of water changes
I have a mixture of Wood chips, sand, iron filings, and gravel. Here is a way to separate them:
- Use a sieve to separate the the sand and iron filings from the gravel and wood chips.
What would be step 2?
Use the sieve again to separate the iron filings and the sand
Use a magnet to separate the iron filings from the sand
Use a tweezers to pick out the iron filings
use a filter and water to separate the sand from the iron filings
Students collected data on the appearance of four substances and how they reacted when mixed with water.
Which substances dissolved when mixed with water?
A and B
A and C
B and C
C and D
What's easier to separate, a mixture or a solution?
mixture
solution
