WorksheetsChanges in Matter Unit 3
Total questions: 20
Worksheet time: 2hrs 40mins
Julia is looking for examples of substances that will dissolve in water. She experiments with some things she finds in her kitchen at home. Which of these will NOT dissolve in water?
jell-o powder
black pepper
salt
sugar
Anna filled a cup with hot tea. Then she added a sugar cube. Which of these will help to make the sugar cube dissolve more quickly?
adding ice cube to the tea
adding more sugar cubes
pouring more tea into the cup
stirring the hot tea
Martha has a big box with a mixture of paper clips. Some are metal and some are plastic. Which is the best property for Martha to use to separate the metal paper clips from the plastic paper clips?
magnetic attraction
mass
particle size
shape
Cecil is going to investigate the effect water has on a steel nail. What type of change is he most likely investigating?
bending
burning
melting
rusting
Mr. Smith is going to show paper going through a chemical change. What can he do to the paper to cause the chemical change?
burn it
cut it
draw on it
tear it
Brody did only one trial of his experiment. What is the best reason why he should repeat his experiment?
to be sure he used the fewest steps possible
to check for accuracy
to get a better grade
to see whether another method gives the same results
Dina and Lawrence used some sugar cubes to make lemonade. How can they make the sugar dissolve more quickly?
add ice cubes to the lemonade
avoid stirring the lemonade
break the cubes into smaller pieces
use more sugar cubes
Lenny placed one sugar cube in a beaker with room temperature vinegar and one sugar cube in a beaker with hot vinegar. He observed the time it took for each sugar cube to dissolve. He found that the sugar cube in the room temperature vinegar dissolved in 3 minutes while the sugar cube in hot vinegar dissolved in 1 minute.
Which of the following is a conclusion that could be supported by evidence from his experiment?
warmer vinegar dissolves sugar cubes faster
salt would dissolve in vinegar in one minute
sugar cubes would not dissolve
temperature does not affect how fast substances dissolve
Carla and Mike are using filter paper and a funnel to try to separate mixtures into their original parts.
Which mixture can be most easily separated using this method?
salt and sugar
sand and salt
water and sand
water and sugar
Four students made these different mixtures.
Whose mixture can most easily be separated by using the sifter shown above?
Angelica's
Cesar's
Hank's
Laruie's
During the water cycle, rain sometimes forms snow. What effect does temperature have on this change?
Decreasing temperature causes a physical change from liquid to solid.
Increasing temperature causes a physical change from liquid to solid.
Decreasing temperature causes a physical change from liquid to gas.
Increasing temperature causes a physical change from liquid to gas.
A chef is making fresh bread for today’s menu. Which statement correctly describes the change that happens as the bread bakes?
physical change from one state to another
physical change that can be reversed
chemical change from dough to bread
chemical change that can be easily reversed
Mrs. Tyler left some candles burning. After a while, the heat from the candles made the wax begin to drip. Which describes the change that happened to the wax?
Physical change from a solid to a gas
Chemical change from a solid to a gas
Physical change from a solid to a liquid
Chemical change from a solid to a liquid
Mei says that when water vapor forms as water boils, it’s a physical change. Which reason can she give to show that she is correct?
Water vapor can be changed back into water.
Water vapor is a gas.
Water can be cooled to form a liquid.
Water vapor cannot be changed back into water.
Sydney and her brother, Zach, were helping put away the groceries after a visit to the grocery store. Zach told Sydney to place the fresh strawberries in the refrigerator so the strawberries would not begin to decompose as fast. Why would the strawberries decompose faster outside the refrigerator?
Decomposing is a physical change that slows down in cooler temperatures.
Decomposing is a chemical change that slows down in warmer temperatures.
Decomposing is a physical change that speeds up in cooler temperatures.
Decomposing is a chemical change that speeds up in warmer temperatures.
Kele investigated the ways his family of four people uses water. He made this graph to show the results. What percentage of the family’s water is used for bathing?
40%
38%
33%
14%
Ashlee is doing an experiment using four eggshells to determine the effect of different sugary drinks on our teeth. Since eggshells are made out of the same substance as teeth, she wanted to model the effect of these drinks on teeth. She put one shell in a cup of cola, one in a cup of apple juice, one in a cup of orange juice, and one in a cup of water. In a month, she will see what has happened to each of the shells. What is the control in this experiment?
Cup of cola
Cup of water
How long the experiment takes
Type of eggshell
Martin is doing an experiment to see the way plants grow without soil. He is growing the plants in different solutions of water and nutrients. In this experiment, what is a plant that gets no nutrients called?
Variable
Condition
Control
Mixture
A scientist is repeating the experiment done by another scientist. Why is he doing the experiment again?
to try another method
to improve the procedure
to be sure the results are accurate
to do the experiment on different equipment
This girl notices that if she does not eat her pear fast enough, it turns brown. She wants to finish eating her apple after doing her math homework. How can she slow down the process of the pear turning brown?
Put the pear in the oven to decrease the temperature
Put the pear on the counter and leave the temperature the same.
Put the pear in the freezer to increase the temperature.
Put the pear in the refrigerator to decrease the temperature.
