WorksheetsTest Review Spring 2023
Total questions: 78
Worksheet time: 1hrs 13mins
Jordan has a mixture of two solids that he has to separate. The solids are small granules that are the same size but different colors. She knows that the silver granules are aluminum and the white granules are salt. Which procedures are the Most reliable way to separate the mixture?
Dissolve mixture in a universal solvent and filter. Then evaporate solvent to retrieve the salt.
Dissolve mixture in a universal solvent and filter.
Pass a magnet over the mixture.
Sift the mixture through fine wire mesh.
A mixture of coffee grounds and coffee are being poured through filter paper. Which property of the coffee grounds, filter paper, and water is being used to separate them out from the molecules?
Size of the coffee particles
the polarity of the molecules
Size of pores in the filter
Temperature of the water
A student wanted to test some objects to see if they would sink or float. What conclusion can be made from her investigation?
The marble is less dense than the water and the mineral oil
The mineral oil is less dense than the colored water and more dense than the block.
The mineral oil is less dense than the colored water
and the block is more dense than the mineral oil.
The block is more dense than the water and less dense than the mineral oil
Which of the following would be the best method to separate small pieces of wood and small pieces of metal placed in a beaker?
Heat the beaker on a hot plate
Pour the contents into a strainer/filter, then separate
Let the contents set for a day to settle out
Add water to the beaker to see which one sinks and which one floats, then separate
Add water to the beaker then separate the water
Students put 3 ice cubes on separate plates. One ice cube had a mass of 20 grams, one is 30 grams, and one is 10g. Which results would be the same for all three ice cubes in this investigation?
The time it took each ice cube to melt completely
The temperature at which each ice cube melted
The amount of liquid produced on each plate
The total volume of each ice cube
What does this illustration contain?
Elements
Compounds
Mixture of just elements
Mixture of just compounds
molecules
Use the graph below to answer this question.
What state of matter would the substance be at points E-F?
(a)
Mrs. Tamel measured 60 milliliters of hydrogen peroxide into a beaker and measured its temperature. She added yeas to the hydrogen peroxide and stirred the beaker. She measured the temperature at three different times in degrees Celsius. She wrote down her observations in the table.
Which sentence describes her results?
Stirring caused the temperature to increase and fewer bubbles to form.
A physical change cause the temperature to decrease and bubbles to form.
A chemical change caused the temperature to increase and more bubbles to form.
Mixing two substances caused the temperature to decrease and fewer bubbles to form.
When a Bunsen burner is lit; why is the presence of a flame considered to be an indication of a chemical reaction?
A flame indicates a change of energy.
A flame indicates a change in chemical energy and phase change.
A flame indicates new physical energy is forming.
A flame indicates a change in chemical energy.
Phillip watches a burning log in the fireplace. He makes these observations:
I. The fire gives off heat.
II. There is a strong smell of smoke.
III. Light is emitted where there are flames
IV. Heat waves appear in the air above the log
V. Ashes form from the logs.
Which of Phillip’s observations are conclusive evidence that the burning log undergoes chemical changes and not just a physical change?
observations I and V only
observations II , III, and V only
observations I, III, and IV only
observations I, IV, and V only
What is the atomic number of this atom?
(a)
What is the mass number of this atom?
1
3
4
7
Which of the following is the correct electron dot structure for nitrogen?
How many neutrons does Argon have in it's nucleus?
(a)
What is the mass number of this atom of Chlorine?
(a)
Darlene places a bolt in the graduated cylinder to find its volume. Its starting volume is 70mL. After she puts the bolt in the graduated cylinder the water level rose to 116mL. What is the volume of the bolt? (type the number only)
(a)
The graph shows energy production in the United States in 1967 and 2007 for several sources of energy. Which conclusion is supported by the graph?
In 1967 more energy was produced in oil than in 2007
More energy was produced in 1967 than in 2007 in every category.
In 2007, more energy was produced from renewable energy sources than from fossil fuels.
People in the United States were more concerned about conserving energy in 1967 than they were in 2007.
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 4.05 grams. How much more sulfur powder does Carla need? type only the number
(a)
Jack has a rock. The rock has a mass of 20g and a volume of 10cm3. What is the density of the rock? Type only the number
(a)
Kelsey is measuring her weight in Kg. She recorded the mass on the scale but realized later that she left her shoes on. She checked and her shoe's weight was 2.5Kg. What is Kelsey's true weight?
(a)
Mr. Lee wants to confirm the metal used in a ring with a mass of 29.915g. The volume of the ring is 1.55 cubic centimeters (cm3). What is the metal composition of the ring?
(a)
What was the net loss in glacier ice thickness between the years 1970 and 1990? type only the number
(a)
Convert this number to standard notation: 2.34 x 10-3
(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?
100 grams of ice
125 grams of ice
125 grams of liquid water
150 grams of liquid water
A scientist studying a species of flower that grows on the side of a mountain measured the height of many of the flowers at different elevations. His results are shown in the graph. Which statement best describes the pattern of growth for the flowers during this experiment?
The flowers cannot grow below elevations of 1,500 meters.
The flowers’ heights increase with higher elevation.
The flowers’ heights are unaffected by elevation.
The flowers grow taller at elevations of around 3,000 meters.
A scientist studied two species of sea snail and recorded the physical characteristics in the data table. Which conclusion about the data is based on correct reasoning?
If a snail she studied had a brown shell, then it was a red foot snail.
If a snail she studied had a brown shell, then it had a white underside.
If a snail she studied was 175 millimeters long, then it had a white underside.
If a snail she studied was 125 millimeters long, then it was red foot snail.
Which question could Julie answer most easily by conducting a scientific experiment?
Does the mass of an ice cube change when it melts?
How long does it take for water to freeze?
What is the temperature of the water?
Does ice melt faster in air or in water?
Chris wanted to determine the effects of a soil pollutant on the growth of a sunflower plant. He designed an experiment and recorded his results in the data table. Where does Chris make a mistake in the design of his experiment?
The amount of water should be the same for each plant.
The amount of sunlight per day should be different.
The amount of pollutant should be the same for each plant.
The experiment should use more types of plants.
In August, how many metric tons did Clark's Paper Mill and Tyler Paper Mill produce altogether? Type only the number
(a)
What year was the FIRST year that female astronauts were chosen?
(a)
A survey was conducted to determine the state of the physical and psychological health of high school students.
Some of the survey questions related to student stress levels and student absences due to illness. The data on these variables are displayed in the image.
Which of the following conclusions are appropriate to draw based on the figure above? (Choose all that apply.)
stress leads to illness
as stress levels increase, the number of absences tends to increase.
many student absences are due to stress.
there is an indirect relationship between stress and illness.
there is a positive correlation between stress level and number of absences.
What is the correct interpretation of the scatterplot about the age of a person and the number of pets owned?
The older a person is, the more pets they own.
The younger a person is, the more pets they own
There is no correlation between a person's age and how many pets they own
The older a person is, they own fewer pets
Describe where the outlier is located in the scatterplot?
(13, 24.5)
(13, 26)
(12.2, 18)
Between 11 and 12
Which graph best shows a negative correlation between the number of hours studied and the test scores?
Which of the following lines represents the line of worst fit for the scatter plot?
Dr. Nguyen is studying the emotional effects of watching television (TV) news. After taking a pretest measuring mood, each of the 200 college students in her sample is randomly assigned to watch fifteen minutes of either good news on TV, bad news on TV, a funny TV show, or no TV
at all. Her participants then complete an identical posttest measure of mood that they completed at pretest. Results of her research appear in the graph. Consider all of the differences between bar heights to be significant.
Which of the following would be accurate conclusions from her research?
Watching TV caused the tested college students' moods to change.
Watching good news on TV causes the tested college students' mood to increase.
If parents show their children a funny show before bed, it will cause the childrens moods to decrease.
Watching a funny show caused the tested college students' moods to decrease.
Directions: Select the correct graph. Mikey had two mice that were about the same age and weight. Mikey fed each of the two mice a different feed for a month. He measured how much the mice weighed every two days until the month was over. Mikey's results showed that although both mice gained weight over the month, mouse 1 gained more weight than mouse 2. Which graph below best shows these results?
(a)
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
1. You set up an experiment in which you have four Hibiscus coccineus (scarlet hibiscus plants) each in 200g of organic soil in identical pots and all sitting in the same window sill with the same full sunlight. You plan to water one plant with 50mL of tap water once per week, one with 50mL of tap water twice per week, one with 50mL of tap water three times per week, and one with 50mL of tap water four times per week. What is the testable question you are trying to answer?
How is plant type affected by organic soil?
How will light affect the growth of Hibiscus coccineus?
How will the amount of water and the type of soil affect the growth of Hibiscus coccineus?
How will the amount of water affect the growth of Hibiscus coccineus?
Nora received a measles immunization that measured 12.25 cm long. How many millimeters was the vaccination?
(a)
Which of the following are matched incorrectly?
cool whip: colloid
Italian dressing: homogeneous mixture
Glucose (C6H12O6): element
Cookies & Cream: heterogenous mixture
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
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
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
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
There is a new vitamin supplement designed to prevent the flu. It was given to two groups. After 10 weeks, neither group reported a case of the flu. What Group is missing from this experiment?
(a)
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
Mrs. Tamel measured 60 milliliters of hydrogen peroxide into a beaker and measured its temperature. She added yeas to the hydrogen peroxide and stirred the beaker. She measured the temperature at three different times in degrees Celsius. She wrote down her observations in the table.
Which sentence describes her results?
Stirring caused the temperature to increase and fewer bubbles to form.
A physical change cause the temperature to decrease and bubbles to form.
A chemical change caused the temperature to increase and more bubbles to form.
Mixing two substances caused the temperature to decrease and fewer bubbles to form.
Mr. Dixon filled a plastic gas can half full at the gas station. He left the can in the sun while he mowed his lawn. When it cam time to fill his lawn mower, the sides of the gas can were pushing out. He asked Mrs. Julius why this happened.
Which of the following was mostly likely her answer to his question?
Since you left your gas can in the sun, it heated up the particles in the liquid gas and they began to move faster and spread apart and evaporate into a gas vapor. This gas vapor then had particles moving very fast which pushed on the sides of the gas can.
Since you left your gas can in the shade, it heated up the particles in the liquid gas and they began to slow down and get closer together and evaporate into a gas vapor. This gas vapor then had particles moving very fast which pushed on the sides of the gas can.
Since you left your gas can in the sun, it cooled down the particles in the liquid gas and they began to slow and come closer together becoming a gas solid. This gas solid pushed on the sides of the gas can.
Since you left your gas can in the shade, it cooled down the particles in the liquid gas and they began to slow and come closer together becoming a gas solid. This gas solid pushed on the sides of the gas can.
Which are examples of Chemical changes?
paper burning
paper being torn
wood being chopped
fire works exploding
cake baking
The carbon atom has how many protons?
(a)
What can be found in the nucleus (center) of an atom?
Protons
Neutrons
Electrons
Garfinkeltrons
Elemental Symbol
In the middle
Atomic Number
Top corner
Mass number
Bottom of tile
Under Symbol
Name of element
Match the following
Group Number
Number of Valence electrons
Period Number
Number of energy levels
Atomic Number
Number of electrons
P++ n0
Atomic Mass
m - P+
Number of n0
Which Bohr model represents the atom that has a mass of 12 and is in period 2 ?
___________ simplify the __________ by showing only the outer valence electrons used for bonding.
Lewis Dot Diagrams, Bohr Models
Bohr Models, Electron Dot Diagram
Electron Dot Diagram, Bohr Models
Valence electrons are in the (a) shell of a model or atom.
Both calcium and potassium have the same number of energy levels. How else could this be stated?
Both elements are in the same group in the periodic table
Both elements are in the same period on the periodic table
Both elements have the same atomic number
Both elements have the same atomic mass
The elements F, Cl, and I are all in the same group/column on the periodic table. Which is the best explanation for this arrangement?
They have the same number of energy levels
They are the same type of element
Have the Same number of protons
they have the same number of valence electrons
What is the atomic number of this element?
(a)
What is the mass number of this atom of Chlorine?
(a)
Which element is this?
(a)
The Name of this element is (a) . It is in (b) 2 and group (c) . It has a mass of (d) and (e) valence electrons.
What element is this
(a)
Potassium has (a) neutrons and it has (b) protons and neutrons. It is has (c) energy levels and is in group (d) . It has (e) electrons on its second ring.
What atom does this Bohr Model represent?
(a)
Draw the Lewis Dot Structure for Sulfur.
