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WorksheetsStandard 1 - Physical and Chemical Changes Benchmark Test(A)
Total questions: 22
Worksheet time: 22mins
Name
Class
Date
1.
A person cuts a wooden log into pieces. Which statement is true about eh wood after it is cut?
a)
The log releases heat when cut.
b)
The amount of matter stays the same.
c)
The wood experiences a chemical change when it is cut.
d)
The total weight of the pieces weighs more than the total of the entire log.
2.
A student's water bottle weights 18 ounces when half full of water. The student places his water bottle in a freezer. How much will the water bottle weigh after the water freezes?
a)
9 ounces. because the volume of the water will decrease by half.
b)
18 ounces, because the amount of water in the bottle will stay the same.
c)
24 ounces, because the frozen water will expand to fill the bottle.
d)
36 ounces, because the volume of the water will double.
3.
Which observation demonstrates candy experiencing a physical change?
a)
Candy pieces being put into a bag.
b)
Candy melting in a student's hand.
c)
Candy making black smoke when heated.
d)
Candy giving off a different smell when mixed with vinegar.
4.
What happens when water freezes?
a)
There is physical change.
b)
There is a chemical change.
c)
Its weight increases a little.
d)
Its amount of matter changes.
5.
Which process is the best example of a physical change?
a)
Paper is burned.
b)
Ice is melted in the sun.
c)
Water is stirred in a dish.
d)
Baking soda and vinegar are mixed.
6.
Which part of a s'mores is an example of a chemical change?
a)
Toasting the marshmallow.
b)
Breaking a graham cracker in half.
c)
Squeezing the marshmallows between the two crackers.
d)
Melting the chocolate.
7.
A student is baking cookies. He weighs the cookie dough before baking. Later he weighs all the baked cookies together. The baked cookies weigh less than the cookie dough. Why did the baked cookies weigh less than the cookie dough?
a)
Gases escaped during baking.
b)
Dough spread out during baking.
c)
Liquids dissolved during mixing.
d)
Air bubbles formed during mixing.
8.
A student makes a cake for a party. Which part of the process is an example of a chemical change?
a)
Mixing together eggs, flour and sugar.
b)
Baking the cake mixture in the oven.
c)
Putting frosting on the cake.
d)
Cutting the cake into pieces.
9.
A student wants to use an ice cube to show that the amount of matter stays the same when it changes form. Which test would best demonstrate this?
a)
Timing how long it take for an ice cube to melt.
b)
Melting the ice cream and then refreezing it again.
c)
Keeping the ice cube in a freezer and weighing it after three days.
d)
Weighing the ice cube, allowing it to melt, and then weighing the water.
10.
A 50-gram chocolate bar is heated and then melts. What will be the weight of the chocolate after it cooks and becomes solid again?
a)
About 40 grams
b)
About 45 grams
c)
About 50 grams
d)
About 55 grams
11.
A student weighs these materials before and after mixing the soda and vinegar. Which sentence best explains how the before and after weights compare?
a)
The weights before and after mixing are about the same, because a chemical reaction produced a gas that filled the balloon.
b)
The weight after mixing is less, because gases weigh less than solids and liquids.
c)
The weight before mixing is greater, because the substance have greater voumen and mass when mixed together.
d)
The weight after mixing is less, because a physical change caused the balloon to fill with air.
12.
A student mixes cocoa in water. Why is this an example of a physical change?
a)
Because the individual parts can be separated if the water is allowed to evaporate.
b)
Because a new substance has been formed.
c)
Because the temperature change of the mixture can be measured with a thermometer.
d)
Because the mixture is thicker than water.
13.
A student took a flat piece of foil and made it into a ball. Which statement provides the best evidence that this is a physical change?
a)
The foil ball and the flat piece of foil are the same substance.
b)
The foil ball and the flat piece of foil weigh the same.
c)
When it became a ball, the foil became hot.
d)
The foil changed color.
14.
Which result of toasting bread shows that a chemical change has happened?
a)
The bread changes temperatures.
b)
The bread expands.
c)
The bread changes color.
d)
The bread falls apart.
15.
What will most likely happen if a pair of metal scissors is left outside in the rain?
a)
The scissors will give off heat.
b)
The scissors will give off gas.
c)
The scissors will give off color.
d)
The scissors will change shape.
16.
A class performed an experiment to show that matter is neither created nor destroyed. Students filled a container with water, covered it with plastic wrap, and placed it in the freezer. Which evidence shows that matter was neither created nor destroyed?
a)
The taste of water before and after freezing is the same.
b)
Pictures of water before and after look the same.
c)
The height before and after freezing the water is the same.
d)
The weight of the water before and after freezing is the same.
17.
A student performs the steps listed below to investigate how the weight of frozen water compares with the weight of liquid water.
What will the student's results show about the weights of the frozen water and liquid?
What will the student's results show about the weights of the frozen water and liquid?
a)
The weight will be different, because liquid water takes up less space when it is frozen.
b)
The weights will be different, because some liquid water will be lost when it changes to ice.
c)
The weights will be the same, because the same amount of liquid water is there even though it changes form.
d)
The weights will be the same because the liquid water will change into a new substance and has the same weight of the liquid water.
18.
Which example illustrates a physical change?
a)
Lemon juice is mixed with milk, producing a solid.
b)
Sugar is dissolved in water, making the water sweeter.
c)
Baking soda is dissolved in lemon juice, producing a gas.
d)
Ammonia is mixed with vinegar, making the liquid warmer.
19.
Which of the following is an example of a physical change?
a)
Burning logs in a fire pit.
b)
A shovel rusting outside a shed.
c)
Ripping paper into many pieces.
d)
Mixing baking soda and vinegar.
20.
Which of the following is an example of a chemical change?
a)
Baking soda is added to vinegar, producing a gas.
b)
Sugar is dissolved in water, making the water sweeter.
c)
Ice cubes are added to a drink making the drink colder.
d)
Food color is added to water, changing the color of the water.
21.
Which action is a chemical change that a student could observe at home?
a)
Slicing cheese
b)
Melting butter
c)
Baking a cake
d)
Cutting an apple.
22.
Based on the table, which substance most likely experienced a chemical change?
a)
Substance 1, because it gave off heat.
b)
Substance 1, because it changed its appearance.
c)
Substance 2, because it gave off heat.
d)
Substance 2, because it changed colors.
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