Matter
A glass is filled half full of water and half full of ice. The mass of the ice and water is 250 milligrams.
Which sentence describes the mass of the ice and water when the ice melts in the glass?
A. It will be 250 milligrams.
B. It will be a little less than 250 milligrams.
C. It will be twice as much as 250 milligrams.
D. It will be a little more than 250 milligrams.
A. It will be 250 milligrams.
Joyce measured 60 milliliters of hydrogen peroxide into a beaker and measured its temperature. She added yeast to the hydrogen peroxide and stirred the beaker. She measured the temperature at three different times in degrees Celsius (°C). She wrote down her measurements and observations in a table.
Joyce's Results
Time | Temperature | Observations |
5 seconds | 36 degrees C | some gas bubbles form |
30 seconds | 37 degrees C | more gas bubbles form |
1 minute | 38 degrees C | many gas bubbles form |
Which sentence describes her results?
A. Stirring caused the temperature to increase and fewer bubbles to form.
B. A physical change caused the temperature to decrease and bubbles to form.
C. A chemical change caused the temperature to increase and more bubbles to form.
D. Mixing two substances caused the temperature to decrease and fewer bubbles to form.
C. A chemical change caused the temperature to increase and more bubbles to form.
Which are examples of physical changes?
Choose all that apply.
a. paper burning
b. paper being torn
c. wood being chopped down
d. wood burning
e. cake being cut
f. cake baking
b. c. e.
b. paper being torn
c. wood being chopped down
e. cake being cut
6. The art teacher has a mixture of crayons, colored pencils, and markers. He made a system to separate them. The first filter separates out objects that weigh as much as a marker. The second filter separates out objects longer than a crayon.
What failure points will he identify when testing the system?
Select all that apply.
a. A used colored pencil may be shorter than a new crayon.
b. A colored pencil could pass through the second filter at an angle.
c. A crayon could leave marks on the filters.
d. A sideways crayon could get caught in the second filter
a. A used colored pencil may be shorter than a new crayon.
b. A colored pencil could pass through the second filter at an angle.
d. A sideways crayon could get caught in the second filter
What tool do we use to measure length, width, height, and depth?
A. Graduated Cylinder
B. Metric Ruler
C. Scale
D. Balance
E. Stop Watch
B. Metric Ruler
Mary mixed 100 milliliters of water with 12 milliliters of sugar in a bowl. She left the bowl with the sugar and water mixture outdoors. After a week, she noticed crystals and a small amount of liquid at the bottom of the bowl.
Which sentence describes what happened in the bowl?
A. There was one new substance formed.
B. There were no new substances formed.
C. There were two new substances formed.
D. There were many new substances formed.
B. There were no new substances formed.
Charles makes three mixtures of milk and peanut butter. He puts lids on each container and freezes each mixture. Some of his measurements are listed here.
Container 1: 10 grams milk, 11 grams total mass, 11 grams frozen mass
Container 2: 20 grams milk, 21 grams total mass, 21 grams frozen mass
Container 3: 30 grams milk, 31 grams total mass, 31 grams frozen mass
Circle the letters of all the statements that describe the patterns in the mixtures.
A. The mass of the mixtures do not change in the freezer.
B. Charles added the same amount of milk to each container.
C. The total mass is the sum of all the ingredients for each mixture.
D. Charles added the same amount of peanut butter to each container.
A. The mass of the mixtures do not change in the freezer.
C. The total mass is the sum of all the ingredients for each mixture.
D. Charles added the same amount of peanut butter to each container.
What property could you use to help identify baking powder?
a. odor
b. conductivity
c. fizzes with vinegar
d. temperature
c. fizzes with vinegar
Which of the following would be chemical changes?
Choose all that apply.
a. bending a metal bar
b. breaking a glass
c. baking brownies
d. molding fruit
e. building a wall out of bricks
f. burning wood in a fireplace
c. baking brownies
d. molding fruit
f. burning wood in a fireplace
What tool do we use to measure weight?
A. Graduated Cylinder
B. Metric Ruler
C. Scale
D. Balance
E. Stop Watch
C. Scale
Rey has a mixture of two solids. One is white solid tiny crystals. The other solid is black solid tiny flakes. He pours water on them. The white solid disappears, and the black solid floats to the top of the water.
Which two materials did Rey most likely mix together?
A. salt and pepper
B. milk and iron filings
C. white and black sand
D. sugar and powdered drink mix
A. salt and pepper
Why is a vegetable salad considered a mixture?
a. The particles are very small.
b. The vegetables can be put together easily.
c. Each part keeps its own identity.
d. All of the colors and flavors fit well together.
c. Each part keeps its own identity.
Phase changes are considered changes.
a. chemical
b. physical
c. decrease
d. temperature
b. physical
What would happen to the amount of matter of a piece of wood if it were cut it into pieces and then burned?
a. It would go up.
b. It would go down after cutting.
c. It would go up, then down.
d. There would be no change.
d. There would be no change.
What tool do we use to measure speed of a distance traveled?
A. Graduated Cylinder
B. Metric Ruler
C. Scale
D. Balance
E. Stop Watch
E. Stop Watch
Matter that has neither definite shape nor definite volume with particles of a gas are far apart and move freely. .
a. Solid
b. Liquid
c. Gas
c. Gas
A scientist has a small container of ocean water. She wants to keep it from changing so that she can study it further. Her lab gets a lot of sunlight every day.
What can she do to keep the ocean water from changing?
a. Cover the container.
b. Increase the temperature of the container.
c. Separate the water into different containers.
d. Add more plain water to the container
a. Cover the container.
Suppose you were asked to design a machine that would be made of materials that best conduct electricity.
Select those that would be useful to you.
a. plastic
b. wood
c. aluminum
d. gold
e. rubber
c. aluminum
d. gold
When Sefa got home from school, he knew something inside the garbage can had a undergone a chemical change.
What evidence did he most likely use to come to this conclusion?
Choose all that apply.
a. The can had three-day-old food in it.
b. There was an odor.
c. The can contained smashed containers.
d. He threw ice cubes in there last night.
e. An old, rusty spoon was thrown out.
a. The can had three-day-old food in it.
b. There was an odor.
What tool do we use to measure mass?
A. Graduated Cylinder
B. Metric Ruler
C. Scale
D. Balance
E. Stop Watch
D. Balance
Matter that has a definite shape and volume with particles are tightly-packed together is a .
a. Solid
b. Liquid
c. Gas
a. Solid
Which of these are considered matter?
a. a feeling of happiness
b. a thought
c. a chicken laying an egg
d. a container filled with milk
e. five minutes passing by
f. bowling pins set up on an alley
c. a chicken laying an egg
d. a container filled with milk
f. bowling pins set up on an alley
Tania is going to make soup. She combines 225 grams of water with 300 grams of condensed soup. Tania then adds 50 grams of celery and 10 grams of carrots.
How much soup does Tania have before she warms it on the stove?
grams
The total mass of the combined ingredients prior to warming on the stove is 585 grams.
225 + 300 = 525 + 50 = 575 + 10 = 585.
Suppose you wanted to learn more about the properties of a new substance.
Which of the following investigations would help you determine its properties?
Choose all that apply.
a. placing the substance in warm water
b. testing it in a circuit
c. trying to bend it
a. placing the substance in warm water
b. testing it in a circuit
c. trying to bend it
What tool do we use to measure the amount of space something takes up?
A. Graduated Cylinder
B. Metric Ruler
C. Scale
D. Balance
E. Stop Watch
A. Graduated Cylinder