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WorksheetsTest 6 Review 2023
Total questions: 75
Worksheet time: 1hrs 18mins
Label the following parts of a chemical formula & the type of compound at the top
Use the image to match the ranges with the phase or state of matter
A-B
solid
B-C
melting
C-D
liquid
D-E
vaporizing
E-F
gas
Represents the oxidation number or how many electrons are lost or gained.
Subscript
Superscript
Ionic
Covalent
An Ionic Bond is which of the following
Loses or gains electrons
Shares electrons
Between metal & Non-metals
Forms multiple bonds
Forms between opposite charges
A covalent Bond is which of the following
Between non-metal & non-metal
Shares electrons
Between metal & Non-metals
Forms multiple bonds
Forms between opposite charges
Why do elements bond?
To gain new properties
To create a new element
To become stable
To get bigger
What kind of bond forms when atoms exchange electrons?
(a)
If an atom gains a negative electron it becomes more
(a)
If an atom losses a negative electron it becomes more
(a)
Which of the following describes covalent bonds?
Bonds form because of opposite charges
electrons are shared to fill outer electron shells
Electrons are transferred between atoms
Covalent bonds are magical
Label the parts of the chemical formula and the type of compound at the top
Label the chemical formula and the type of bond at the top
What type of chemical bond is found in Water?
Covalent
Ionic
Metallic
Both Covalent and Metallic
Is this compound Ionic or Covalent: Ca3(PO4)2
ionic
covalent
In ionic bonding ___
Valance electrons are shared between two or more atoms
Valance electrons are free floating causing the compound to be electrically neutral
Metals atoms transfer their valance electrons to nonmetal atoms
Are insoluble and conduct electricity
Calcium Bromide (CaBr2) bond type is _____
An ionic bond
A molecular covalent bond
A network covalent bond
A metallic bond
A substance made of the combined atoms of two or more elements are called (a) are held together with chemical (b) . Bonds are a (c) that holds compounds together. When compounds are written we use a chemical (d) , which tells you which elements and how many of each are in the compound.
Label the following parts of a chemical formula.
If carbon gained 3 electrons what would its charge be?
(type your answer as a number with a minus for negative - and a plus sign for positive +)
Ex: +18 or -18
(a)
If carbon lost 5 electrons what would its charge be?
(type your answer as a number with a minus for negative - and a plus sign for positive +)
Ex +18 or -18
(a)
Predict the bond that will form between Rb and Se.
(a)
Predict the bond that will form between Se and Cl.
(a)
Label the parts of the chemical formula.
Label the image using the list of labels
You decide to clean your bedroom. You notice that your floor is covered with clothes. You decide to try to get rid of the clothes by throwing the clothes into the air. You throw clothes from 1/3 of the room into the closet and a second 1/3 of the room straight up in the air. In the last 1/3 of the room, you leave the clothes on the floor. After 30 minutes of "cleaning", the floor of the room is now visible.
The amount of clothes
Constant
The direction you are throwing the clothes
Experimental Groups
The cleanness of the room before cleaning
Control Group
How clean the bedroom is after cleaning
Dependent
Method of cleaning
Independent
A biologist hypothesizes that a squirrel's body size is affected by the inclusion of a particular type of food in its diet. Which is the best method the scientist could use to prove this hypothesis?
Collect data by observing the squirrels eating food in the wild.
Design a controlled experiment to test different types of food.
Set up the experiment with squirrel's of the same type, body size and age and test the body size before and after the different types of foods are used.
Develop a theoretical model to predict how the food type will affect body size
Vinegar creates the greatest difference in average mass of the eggs
Water creates the greatest difference in average mass of the eggs
Water enters the cell when placed in environments of high water concentration.
Corn Syrup leaves the cell when placed in environments with a low concentration of solutes
Submerging the egg in water created the greatest difference in average mass of the egg
The part of this data table that will be graphed on the Y-AXIS is (a) . The (b)
will be graphed on the x-axis.
In an experiment to determine the effects of listening to loud music on test scores, what would the y-axis label be?
Volume of music
Type of music
Number of people
Test score
The trend shows that as the volume (a) the (b) increases
Darlene places a bolt in the graduated cylinder to find its volume. Its starting volume is 80mL. After she puts the bolt in the graduated cylinder the water level rose to 115mL. 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 all other categories than in renewable energy sources.
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 3.85 grams. How much more sulfur powder does Carla need? type only the number
(a)
Jack has a rock. The rock has a mass of 22g and a volume of 11cm3. 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 3.5g. 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 1990 and 1970? type only the number
(a)
Convert this number to standard notation: 4.34 x 102
(a)
Jane is setting up an experiment involving bean plants. She places a bean inside a damp paper towel, then places it inside a Ziploc bag. She takes another bean but places it inside a dry paper towel. She tapes both Ziploc bags to her classroom window next to each other. She checks each day to observe and record the data. Jane is most likely investigating which hypothesis:
Beans cannot grow in a paper towel.
Amount of sunlight affects how fast beans grown.
What does a bean look like once it's sprouted?
A dry bean grows quicker than a damp bean.
A scientist studied two species of sea snail and recorded their physical characteristics in the data table. Which conclusions about the data is based on correct reasoning?
If a snail she studied was 150 millimeters long, then it was 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 115 millimeters long, then it was red foot snail.
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.
As Elevation increases past 3,000 meters the height of the flowers decreased
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?
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.
Which of the following lines represents the line that is the worst fit for the scatter plot?
A
B
C
D
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's weights were affected over the month, mouse 1 gained more weight, while mouse 2 lost weight. Which graph below best shows these results?
(a)
How many students either chose basketball or hockey as their favorite sport?
(a)
Jamie practiced for her piano recital for 5 days in a row.
She found the sum of hours she practiced on day 4 and day 2. What is the difference of that sum and the number of hours she practiced on day 5?
(a)
Which pie chart represents the same data as the table?
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 less 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 less dense than the colored water and the marble is more dense than the mineral oil
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 different 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
Mrs. Tamel measured 60 milliliters of hydrogen peroxide in a beaker and measured its temperature. She added yeast to the hydrogen peroxide and stirred the beaker. She measured the temperature three different times in degrees Celsius. She wrote down her observations on the table.
Which sentence describes her results?
Stirring caused a chemical change and the temperature to increase and caused more bubbles 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.
The reaction represents a chemical change because the rust is just a mixture of water and iron.
The reaction represents a chemical change because the iron oxide is a new substance and has a different melting point than iron.
The reaction represents a chemical change because both the original cannonball and the rusted cannonball are solids.
The reaction represents a chemical change because iron oxide is a new substance formed on the cannonball.
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. There is a strong smell of smoke.
II. The fire gives off heat.
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 V only
observations I, IV, and V only
Which graph best a negative correlation between the number of hours studied and the test scores? Type the letter of the graph
(a)
Parts of the atom include positive particles called (a) , neutrons which have a (b) charge and electrons that have a (c) charge. The protons and neutrons are located in the (d) . The (e) are not allowed in the nucleus so they stay in the energy levels.
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.
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?
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 decrease the growth rate. The other group he feeds the same food without chemical A added. His research shows that chemical A increased 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 not given the special juice to drink while they work. Group B is 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
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. Groups A and B are the (a) group. There is no data listed for the (b) group,
How long did this substance remain a liquid?
1.5 minute
2.5 minutes
2.0 minutes
1 minutes
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
Select both elements that have the same number of valence electrons
B
C
Ge
P
The Name of this element is (a) . It is in (b) 4 and group (c) . It has a mass of (d) and will have a charge of (e) becauseit is a metal and metals lose electrons
Aluminum has (a) neutrons and its protons and neutrons add up to (b) . It is has (c) energy levels and is in group (d) . It need (e) more electrons to be stable.
