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WorksheetsSum of Parts and Physical and Chemical Changes
Total questions: 20
Worksheet time: 2hrs 40mins
Name
Class
Date
1.
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.
2.
Which is an example of a different substance being formed?
a)
glass breaking
b)
metal melting
c)
water freezing
d)
wood burning
3.
If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
a)
2 grams
b)
5 grams
c)
10 grams
d)
15 grams
4.
A student wanted to make a salad. The student weighed each vegetable before cutting and placing it in the salad. Which best describes the weight of the salad compared to the total weight of the vegetables?
a)
The total weight of the vegetables will be the same as the weight of the salad because the vegetables did not lose or gain weight.
b)
The total weight of the vegetables will be more than the weight of the salad, because cutting the vegetables increased their weight.
c)
The total weight of the vegetables will be less than the weight of the salad, because the vegetables weigh less when they are cut.
d)
The weight of the salad will be more than the total weight of the vegetables, because the vegetables were chemically changed.
5.
A student pours ¼ cup of salt on a scale. The student then puts 3 cups of water in a container on the scale, and records the weight of the salt and the container of water. The student pours the salt into the container of water, and waits for it to dissolve. The student then weighs the salt and water solution. Which of the following best describes the weight of the salt and water mixture compared to the weight of the salt and water before they were mixed?
a)
The weight of the salt and water mixture will be the same, because the mass of the salt and the mass of the water did not change.
b)
The weight of the salt and water mixture will be less, because the salt lost some of its mass when it dissolved.
c)
The weight of the salt and water mixture will be more, because the salt molecules will inflate, causing the mass to increase.
d)
The weight of the salt and water mixture will be more because the water absorbes the salt, which increases in mass.
6.
Which example best describes a physical change?
a)
baking a pie
b)
burning a candle
c)
making a paper airplane
7.
Jasmine bought a 525-gram bag of unfrozen fruit popsicles. Which best describes the mass of the popsicles after they were completely frozen?
a)
325 grams
b)
425 grams
c)
525 grams
8.
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.
9.
Ivy mixed 30 g of hot chocolate mix with 200 g of hot milk. She then added 5 marshmallows with a mass of 8 g each. Which best describes the mass of her hot chocolate?
a)
235 grams
b)
238 grams
c)
270 grams
10.
Thomas has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed?
a)
550 g of salt and 650 g of water
b)
900 g of salt and 200 g of water
c)
1,200 g of salt and 1,200 g of water
11.
Lynne cuts up 40 g of strawberries, 50 g of cantaloupe, and 70 g of pineapple into a bowl. Which best describes the amount of fruit salad in the bowl?
a)
90 grams
b)
120 grams
c)
160 grams
12.
Robert fills an 8-lb cooler with 20 lbs of ice. After leaving the cooler in the sun for an hour, how much will the cooler and the melted ice weigh?
a)
12 pounds
b)
20 pounds
c)
28 pounds
13.
Which is an example of a chemical change?
a)
melting ice to make water
b)
baking cake batter to make a cake
c)
putting cheese on bread to make a cheese sandwich
14.
Katrina built a house weighing 1 pound out of toy blocks, but she accidentally knocked it down. What was the weight of all of the fallen blocks?
a)
1/2 pound
b)
2 pounds
c)
1 pound
d)
0 pounds
15.
Which example best describes a chemical change?
a)
wax melting
b)
an apple turning brown
c)
a piece of paper being cut into small pieces
16.
A teacher places a penny into an amount of acid in a closed container to demonstrate a chemical change. The penny weighs 3 grams and the acid 230 grams. After the chemical reaction takes place, what will be the mass of the penny and acid?
a)
3 grams
b)
200 grams
c)
230 grams
d)
233 grams
17.
Which is a physical change involving an egg?
a)
frying an egg
b)
boiling an egg
c)
breaking an egg
18.
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
19.
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
20.
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.
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