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WorksheetsTest 2 Fall Review 2023
Total questions: 76
Worksheet time: 2hrs 0mins
Mr. Bullock is helping Mrs. Julius with a lab. He makes three mixtures of milk and peanut butter. He puts lids on each container and freezes each mixture. Some of his measurements are listed above.
Choose all the statements that describe the patterns in the mixtures.
There are multiple answers to select!
The weights of the mixtures do not change in the freezer.
Mr. Bullock added the same amount of milk to each container.
The total weight is the sum of all ingredients for each mixture.
Mr. Bullock added the same amount of peanut butter to each container.
•Let’s take a look at the data generated from an experiment where blue and green lights were used to grow tomato plants. Which of the following would make the data from this experiment more reliable?
Grow the plants for more than 20 days
Use white light as a control group for comparison
Use more colors of light to see how the effects of each color compares
Use different types of plants to see the effect different colors of light has on different plant species
Nora received a measles immunization that measured 12.25 cm long. How many millimeters was the vaccination?
(a)
Kelsey is measuring her weight in g. She recorded the mass on the scale but realized later that she left her shoes on. She checked and her shoe's weight was 10 g. What is Kelsey's true weight?
(a)
During an experiment, a student measures the mass of ice and of liquid water and then places the mixture into a freezer for a day. The table shows the data.
What will the student have at the end of the experiment?
85 grams of ice
125 grams of ice
125 grams of liquid water
150 grams of liquid water
Which of the following are NOT types of mixtures?
element
solution
compound
colloid
suspension
Darlene places a bolt in the graduated cylinder to find its volume. Its starting volume is 98mL. After she puts the bolt in the graduated cylinder the water level rose to 110 mL. What is the volume of the bolt?
(a)
What would be the best scale for this data?
Days Cm
1- 11.5
2- 15.5
3- 21.7
4- 25.0
5- 31.5
count by fives to 35
count by three's to 30
count by ones to 31
count by twos to 32
The red dots attached to each other represent a/an (a) of the (b) type bonded together. The green and red dots attached to each other represent a/an (c) . These are atoms of (d) types bonded together. This means the entire image represents a/an (e) .
Dr. Peterson does an experiment to research the growth rate of mice. He has two groups of mice. He feeds one group a type of food and adds chemical A, which is supposed to increase the growth rate. The other group he feeds the same food without chemical A added. His research shows that chemical A decreases the growth rate by 30%. He does the experiment 4 times and comes up with the same result each time.
Dr. Peterson concludes that chemical A does increase the growth rate of mice. Is Dr. Peterson's conclusion supported by scientific knowledge?
Yes; any study that involves a percentage is based on scientific knowledge.
Yes; his conclusion is supported by evidence from his experiment.
No; science cannot be used to research small animals such as mice.
No; his conclusion is not supported by the evidence from the experiment because the growth rate decreased.
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. GroupA made 1,587 stacks, Group B made 2,113 stacks
Group A
Experimental Group
Group B
Control Group
# of Stappled stacks of paper
Dependent variable
Special Juice
Independent Variable
The graph below shows atmospheric carbon dioxide levels since the year 1880.
Which of the following conclusions can be drawn from this graph
Atmospheric carbon dioxide levels are responsible for global temperature change.
Atmospheric carbon dioxide levels have been rising at an increasingly lower rate as the past century has progressed
Atmospheric carbon dioxide levels have remained the same over the past century.
Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.
An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda.
pulse rate of each group before caffine
Control Group
age of participants in each group
Constant Variable
Pulse rate of each group after caffine
Experimental group
Type of soda
Independent Variable
Pulse rate
Dependent Variable
Match the size of the molecules with the correct type of mixture.
Colloid
Medium
Solution
Small
Suspension
Large
element
tiny
Medium -- What mass does the object have? Type the number and include the unit symbol.
(a)
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music.
Type of liquid
Independent Variable
Plant growth
Dependent Variable
Plants given water
Control group
Music
Constant variable
Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.
Wing Length
Independent Variable
Amount of time it takes the helicopter to hit the floor
Dependent
The height they are dropped from
Constant
A student did an experiment to test how effective different antibiotics are. She treated one paper disk with water, and three others with different antibiotics. Each was placed on a dish where bacteria could grow.
The bacterial growth
Dependent
The size of the paper disks
Constant Variable
The type of antibiotic
Independent Variable
The disk with water
Control Group
Disks with antibiotics
Experimental Group
A pure substance can be either an element or a (a) .
Homogeneous
heterogeneous
Suspension
Colloid
Homogeneous
Solution
Heterogeneous
A mixture in which 2 liquids are mixed so evenly that it is not possible to see the separate particles and it does not scatter light.
(a)
The parts of a homogeneous mixture look the (a) throughout.
A (a) is a combination of substances that can be physically separated.
A pure substance can be either a compound or a (a) .
Glucose C6H12O6 is an example of a(n)
(a)
Oxygen is an example of a(n)
(a)
Substances (a) be separated?
A combination of pure substances, not in fixed amounts, that can be easily separated and can scatter light
HOMOGENEOUS
HETEROGENEOUS
Suspension
This is similar to a solution, but the particles that are in it are able to be seen by the naked eye.
heterogeneous
homogeneous
A combination of sand and water is an example of a(an)
(a)
What is it called when light passes through a colloid and scatters/spreads out?
Tyndall Effect
Fog Effect
Scatter Effect
Mixture Effect
Which of the following are types of mixtures?
element
solution
compound
colloid
suspension
when light scatters it means that it...
goes straight through a substance
is spread out by the substance
is spread out by the substance then settles
is spread out by the substance then separates
separates
when particles settle it means that they...
fall to the bottom of the container
can be physically separated
will physically separate themselves
float in a solution
chemically react
Which of the following are characteristics of a colloid, like fog?
homogeneous
scatters light
particles do settle
particles do not settle
heterogeneous
A colloid and a solution
have particles that cannot be seen with a microscope
scatter light
are homogeneous
are heterogeneous
have small particles that do not settle
if a substance needs to be shaken before using it then it is a ...
solution
suspension
colloid
mixture
fog
if a substance scatters light it is a ...
(a)
This Soda is a
(a)
Sunscreen
Colloid
Solution
Suspension
Heterogenous
Homogeneous
Milk
Colloid
Solution
Suspension
Homogenious
Heterogenious
Snow globe
Colloid
Solution
Suspension
Heterogeneous
Homogenous
Vinegar
Colloid
Solution
Suspension
Homogeneous
Heterogeneous
Which statements are correct concerning the image
The cylinder on the right is a colloid because the light is separating in it
The cylinder on the left is a solution because light is passing straight through it.
The cylinder on the left is a solution because light is being scattered through it.
The cylinder on the right is a colloid because the light is scattered through it.
The cylinder on the right is a colloid because light is going straight through it.
Which of the following graphs best illustrates the relationship between the heat released by the foods listed in Table 1 and the change in water temperature? (Type the LETTER of the correct Graph)
(a)
According to recent temperature trends in New York City, one might predict which temperature on day 7?
75
83
67
72
Which liquid had the highest molecular viscosity? Type the name of the liquid
(a)
The number of teachers at four schools are shown in the bar graph below. The number of teachers at school S is missing. There are a total of 48 teachers at schools S, T and V. Which bar graph represents the number of teachers at school S?
Which question is the experiment most likely designed to answer?
What are the effects of water on plant growth?
How does the amount of water a plant receives affect its growth?
How does the height of a plant affect how much sunlight it needs?
How does the amount of sunlight a plant receives affect its growth?
At what temperature did glycerol expand exactly 1.0 mL?
60°C
38°C
40°C
57°C
Match the following materials with the type of matter
Carbon Dioxide (CO2)
Compound
Pb3
Element
Air
Homogeneous Mixture
Cookies & Cream
Heterogeneous Mixture
Salt Water
Solution
Which number is the least in value
6.0 x 10-9
4.0 x 10-11
3.0 x 106
2.0 x 108
Mr. Lee wants to confirm the metal used in a ring with a mass of 50.29 g. The volume of the ring is 2.35 cubic centimeters (cm3). What is the metal composition of the ring?
(a)
Carla needs exactly 100.00 grams of sulfur powder for an experiment. The picture shows the mass on the scale so far. She did not zero the scale before starting. Carla knows that the weighing paper weighs 3.50 grams. How much more sulfur powder does Carla need?
(a)
Which type of graph would you create for this data table?
(a)
Type of biocrust
# of Amoebae
1. What question did the scientists who collected this data NOT want to answer? (Choose all that apply)
Are there more female earthworms in the soil in the spring or in the fall?
What is the effect of plowing soil on the number of earthworms?
How is the size of earthworms affected by the seasons?
Does plowing soil affect how fast earthworms grow?
What is happening at A?
The object is stationary, not moving for a period of time.
The object is accelerating at a rapid steady pace; moving away from the starting position
The object has a slower steady speed; moving away from the starting position
The object is moving at a constant speed before slowing down.
What was the net loss in glacier ice thickness between the years 1980 and 1990?
8m
6m
2m
4m
Four student groups pour equal masses of sugar into equal volumes of water. The table lists the differences in conditions for each group. Which group would support the hypothesis that increased surface area and heat will dissolve solutes faster?
(a)
An experiment is performed on plants to see how different types of music affect plant growth. Each plant in the experiment are played different music; classical, Rap, Country, Rock, and silence. Each plant has the same soil, sunlight, and same amount of water.
Type of music
Independent Variable
Plant growth
Dependent Variable
Plants grown in silence
Control group
Water
Constant variable
Plants grown in differing types of music
Experimental group
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant.
Three sets of plants were treated with acidic solutions of known pHs.
(A Lower pH (acidity number) means a higher level of acidity)
The control set wa s treated with a solution of water with a neutral pH 7.
Based on the experiment, choose all of the conclusions that can be drawn.
Lower acidity numbers are helpful for this type of plant.
Lower acidity numbers are harmful to this type of plant.
A higher acidity number is harmful to this type of plant.
A High acidity number is helpful to this type of plant
A Neutral pH solution produces the best results.
Suzie wants to know the effect of different colors of light on the flowering of plants. She believes that plants can flower best in white light. She buys 5 rose bushes of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in a green light, one in red light, and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. Over the next two weeks, Suzie recorded the number of flowers produced by each plant. Match the statements to the correct variable and group.
Number of flowers with no light in a closet
Control group
color of light
Independent Variable
Amount of water given to the rose bushes
Constant
Plants grown in different colors of light
Experimental Group
Number of flowers
Dependent Variable
Mr. Batchelder wants to know if the number of games he watches the Cardinals play, with his football club each season has an effect on the number of games they win. Mr. Batchelder decides to run this experiment over three football seasons. In the first season, he watches none of the games the Cardinals play, with his football club. In the second season, he watches 50% of the games they play, with his football club. In the third season, he watches 100% of the games they play, with his football club. He watches all the games with the same club members, from the same spot on his couch and wears his lucky tie. Match the statements to the correct variable or group.
The number of games Mr. Batchelder watches, with his football club
Independent Variable
Club Members
Constant Variable
The number of games the Cardinals win
Dependent Variable
The season where Mr. Batchelder watches 0 games, with his football club
Control Group
The seasons where Mr. Batchelder watches 50% and 100% of the games, with his football club.
Experimental Group
Dr. Peterson does an experiment to research the growth rate of mice. He has two groups of mice. He feeds one group a type of food and adds chemical A, which is supposed to increase the growth rate. In the other group, he feeds the same food without chemical A added. His research shows that chemical A increases the growth rate by 30%. He does the experiment 4 times and comes up with the same result each time.
Dr. Peterson concludes that chemical A does increase the growth rate of mice. Is Dr. Peterson's conclusion supported by scientific knowledge?
Yes; any study that involves a percentage is based on scientific knowledge.
Yes; his conclusion is supported by the weight gain evidence.
No; science cannot be used to research small animals such as mice.
No; his conclusion is not supported by the evidence from the experiment because the growth rate decreased.
Which image represents an element?
Element
Mixture of comounds and elements
mixture of elements
Compound
Which of the following are characteristics of a homogeneous mixture?
Can be separated
Can see different parts
Cannot see different parts
made of two or more substances
made of two or more elements
Kevin is identifying samples of three unknown metals. One of the properties he will use for identification is density. The table shows the mass and volume for each sample. Kevin knows that the units of density are grams per cubic centimeter (g/cm3). Calculate the density for sample 3 and find the answer bellow.
4.50 g/cm3
10.49 g/cm3
4.50 g/cm
87.26 g/cm3
.22 g/cm
