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WorksheetsConservation of matter
Total questions: 16
Worksheet time: 9mins
An oreo cookie has a mass of 20 grams. It gets crushed into crumbs for a recipe. What is the mass of the crumbs?
15 grams
25 grams
20 grams
In a reaction A + B ----> C.
Reactant A has 5g and product C has 9g.
How many grams does reactant B should have?
4g
5g
9g
14g
Matter is anything that ---
takes up space and has mass.
is in our universe.
is light, sound or ideas.
The Law of Conservation of Matter states that the total amount of matter _____ after it undergoes change.
disappears
stays the same
weighs less
explodes
When ice melts, the water has the same _________ as the
temperature
state of matter
shape
mass
15 grams of sugar are dissolved into 300 grams of water. what is the mass of the mixture?
15
315
285
300
250 grams of iron and sand are separated. The mass of the sand is 150 grams. What is the mass of the iron?
is it impossible to determine.
100 grams
150 grams
250 grams
Sarah and Jake were each given a ball of clay that has a mass of 400 grams. Both students used all their clay to make an object. Sarah rolled hers into a ball, and Jake made a long, skinny rope. What is the mass of the clay figures now?
Sarah's weighs more because it is round
Jake's weighs more because it is long
There is no way of knowing
They figures would have equal masses.
Which of the following is NOT part of the Law of Conservation of Matter?
Matter cannot be created or destroyed
Matter can be rearranged
Fire converts matter to heat
Matter can change phase; go from a solid to a liquid to a gas
Which picture below would correctly demonstrate the Law of Conservation of Matter if this picture is the reactants?
5 grams of salt is dissolved in 100 mL of water to form a salt water solution. The solution is heated and all the water evaporates as steam. How much salt would you expect to have left in the container?
2.5 grams
5 grams
105 grams
500 grams
Which two situations show that matter may be changed, but the mass will not change? Choose TWO.
Some papers weigh less after they have burned
A clay ball that is 5 cm long is then rolled into a snake 10 cm long
A candle is burnt for an hour and gases escape into the air
A wrapped chocolate bar left in the car on a sunny day melts
Matter cannot be _______ or destroyed.
created
found
moved
bought
As a candle burns it gets shorter. Where does the wax go?
it melts into the candle
it burns and releases gases into the air
it disappears
wax goes into the air
