Worksheets5.P.2.2 and 5.P.2.3 Review
Total questions: 20
Worksheet time: 19mins
Name
Class
Date
1.
Jennifer left her bike outside, buried in snow. In the spring, when the snow melted, she found her bike covered in rust. Which best describes the change to the bike?
a)
It was a chemical change, because the bike was a different color.
b)
It was a chemical change, because the rubber tires were deflated.
c)
It was a chemical change, because rust can be removed from the metal.
d)
It was a chemical change, because rust is a new substance on the metal.
2.
Jane took a 1 ounce slice of bread and cut it into 2 pieces. On one side, she put 2 ounces of peanut butter. On the other side she put 1 ounce of jelly. Which will most likely be the weight of the finished sandwich?
a)
7 ounces
b)
3 ounces
c)
6 ounces
d)
4 ounces
3.
A piece of wood is sawed into several small pieces. This is an example of what kind of change?
a)
physical
b)
chemical
c)
electrical
d)
mechanical
4.
Which is an example of a chemical change?
a)
baking a cake
b)
freezing water
c)
crushing a can
d)
breaking an egg
5.
Jackie creates a piece of artwork by melting crayons and mixing the colors together. She uses 20 crayons that weighed 5 grams each. What is most likely the weight of her artwork?
a)
4 grams
b)
5 grams
c)
20 grams
d)
100 grams
6.
Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be?
a)
4.75 grams
b)
5.0 grams
c)
5.25 grams
7.
Dry ice immediately becomes a gas at room temperature. How much will the contents of 500 g of dry ice, placed in a closed container at room temperature, weigh after half the dry ice turns into a gas?
a)
250 g
b)
350 g
c)
500 g
d)
600 g
8.
The mass of a grape drink mixture is 150 grams. Kathy boils the mixture and notices that 50 grams of water has evaporated. Which will most likely be the result?
a)
The mass of the grape juice mixture will be 50 grams.
b)
The mass of the grape juice mixture will be 100 grams.
c)
The mass of the grape juice mixture will be 200 grams.
d)
The mass of the grape juice mixture will remain 150 grams.
9.
Sue is making pudding for her family. She mixes 490 g of cold milk with 90 g of pudding mix and then puts it in the refrigerator to solidify. About how many grams of pudding was made?
a)
90 g
b)
190 g
c)
400 g
d)
580 g
10.
Brad accidentally left his crayon box in the car on a hot day. Which best explains what happened to his crayons?
a)
crayons melted; changed from solid to liquid
b)
crayons melted; changed from liquid to solid
c)
crayons evaporated; changed from liquid to solid
11.
Which best describes why deflating the air from a basketball is an example of a physical change?
a)
The basketball’s shape is changed.
b)
The basketball’s color is changed.
c)
The basketball’s size is changed.
12.
Mike is racing his electric toy truck. The truck hits a brick wall, and the front of the truck gets crushed. If the truck originally had a mass of 2.0 kg, how much mass does it most likely now have?
a)
1.5 kg
b)
1.9 kg
c)
2.0 kg
d)
2.2 kg
13.
A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change?
a)
The mass of the balloon increases because the size of the balloon has increased.
b)
The mass of the balloon increases because the temperature of the balloon has increased.
c)
The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
d)
The mass of the balloon stays the same because warming decreases the mass enough to cancel out the effect of increasing the size.
14.
Which is the best example of a change that can be undone?
a)
clay put in an oven to harden
b)
cake batter put in an oven to bake
c)
chocolate left in a warm car to melt
15.
A 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the weight of the egg?
a)
50 grams
b)
55 grams
c)
100 grams
d)
110 grams
16.
Ray had a rope that weighed one pound. Which best describes the weight of the rope after he cut it into four pieces?
a)
1/4 lb
b)
1 lb
c)
2 lbs
d)
4 lbs
17.
Which is a physical change involving an egg?
a)
frying an egg
b)
boiling an egg
c)
breaking an egg
18.
Which best describes what happens when water condenses on a glass?
a)
A physical change occurs, because the water changes form.
b)
A physical change occurs, because the water changes color.
c)
A chemical change occurs, because the water gives off light.
d)
A chemical change occurs, because the water forms a new substance.
19.
Which statement best describes why baking a cake is an example of a chemical change?
a)
The process takes place in an oven.
b)
The process requires heat energy.
c)
The process cannot be reversed.
d)
The process can be repeated.
20.
Stanley left an ice cube on his kitchen counter. An hour later, Stanley observed that the ice cube melted. Which statement best describes this change?
a)
Ice melting is a physical change because a new substance is created.
b)
Ice melting is a chemical change because a new substance is created.
c)
Ice melting is a chemical change because it may be reversed.
d)
Ice melting is a physical change because it may be reversed.
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