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WorksheetsPeet JH Semester Exam REVIEW - FALL 2024
Total questions: 56
Worksheet time: 56mins
Which of the following is NOT evidence of a chemical change?
Bubbles or fizzing
Expected color change
Temperature change
Formation of a precipitate
When vinegar and milk are added together, a chunky solid forms. This is called a _____.
solution
solute
precipitate
solvent
When a solid goes through a phase change and changes straight to a gas, that is called ____.
sublimation
precipitation
evaporation
deposition
Which of the following is a physical change?
Iron rusting
A cake baking in the oven
Dry ice sublimating to a gas
Lighting a match
Identify which of these mixtures is a solution.
Water and salt
Water and sand
Salt and Sugar
Salt and Sugar
In a sugar water solution, what is the sugar?
The solvent
The homogeneous mixture
The heterogeneous mixture
The solute
Which of the following would we see sugar dissolve the fastest?
50 degree water with a sugar cube in it
50 degree water with powdered sugar in it
60 degree water with a sugar cube in it
80 degree water with powdered sugar in it
Why does powdered sugar dissolve faster than a sugar cube.
It has greater surface area for the water to act on.
It has less surface area for the water to act on.
The water moves slower around the powdered sugar particles.
The water moves faster around the powdered sugar particles.
Which of the following is NOT a way to increase the rate of dissolution?
Agitate (Stir)
Heat it up
Decrease the surface area of the solute
Increase the surface area of the solute.
How can we make a salt solution MORE dilute?
Take out some of the water
Take out some of the salt
Add water
Add salt
Which of the following is a MORE concentrated solution?
100 mL of water with 50mg of salt
100 mL of water with 25mg of salt
100 mL of water with 75mg of salt
100mL of water with 100mg of salt
Which of the following describes evaporation?
Solid to a gas
Solid to a liquid
Liquid to a Gas
Gas to a Liquid
When water vapor _________ at it rises in the atmosphere, it _________.
cools, condenses
cools, evaporates
heats, condenses
heats, evaporates
Which of the following is an example of a chemical change?
Boiling water
The rotting of a banana
Heating up pasta in the microwave
Dissolving salt in water
If blue Kool-Aid powder is added to water, what kind of change occurs? Why?
Chemical Change,
Because it is a color change
Chemical Change, Because it bubbles and fizzes
Physical Change,
Because it changes to the expected color
Physical Change, Because you can still see the separate powder and the separate water.
Which of the following is NOT a chemical formula?
NaCl
H2O + NaCl
Be3PO4
O2
Which of the following is a chemical symbol?
Be
CO
KI (capital i)
SO4
What is the ration of hydrogen atoms to oxygen atoms in this formula? H2O
1:2
3
2:1
2
If Carbon and Oxygen are in a 1:2 ratio, how many atoms of carbon are there? What is formed?
1,
C2O
1,
CO2
2,
C2O
2,
CO2
How many ATOMS are in the following chemical formula? 2K(PO4)3
9
11
16
32
How many ELEMENTS are in the following chemical formula? Na3(SO4)2
13
9
2
3
Which of the following does NOT represent a single atom?
Be
O
Ni
N2
If 200mL of water is added to 300mL of vinegar, what is the solute and WHY?
Vinegar,
Because it's a larger amount
Vinegar, Because it's a smaller amount
Water, Because it's a larger amount
Water, Because it's a smaller amount
In which beaker will we see food coloring spread out the fastest in the water?
100 degree
75 degree
50 degrees
25 degrees
Why does salt dissolve fastest in hot water?
The kinetic energy of the salt is increased so it dissolves faster.
The kinetic energy of the water is increased so water comes in contact with salt particles more quickly.
The kinetic energy of the salt is decreased so it dissolves faster.
The kinetic energy of the water is decreased so water comes in contact with the salt particles more quickly.
Which of the following shows an object's velocity?
3 m South
5 m/s South
3 m
5 m/s
What is the speed of an object that covers 80 meters in 10 seconds?
800 m/sec
8 m
8 sec
8 m/sec
If the boy rode his bike from point A to B, from point B to C, and then point C to A, what distance did he travel?
8 m
16 m
12 m
0 m
A student rode from point A to B and then to point C. What is his displacement?
0 m
12 m
5 m
4 m
What does the slope (steepness) of a line on a distance-time graph show?
The speed
The acceleration
The total distance
The total time
Which of the following distance-time graphs would show an object moving at a greater constant speed?
Which of the following shows an object accelerating?
What is happening at segment B on this distance-time graph
Constant speed
No motion (stopped)
Speeding up
Slowing down
What is happening at segment C on this distance-time graph?
Slowing Down As Coming Back to Start
Slowing Down Going Further from Start
Constant Speed Coming Back to Start
Constant Speed Going Further from Start
What is the average speed for the 3 trials indicated in the data table?
400 m/min
500 m/min
200 m/min
300 m/min
What type of force is shown in this picture? Why?
Balanced, Because the forces are equal in size and are in the same direction
Balanced, Because the forces are equal in size and in the opposite direction
Unbalanced, Because the forces are equal in size and are in the same direction
Unbalanced, Because the forces are equal in size and in the opposite direction
What is the net force shows in this diagram?
20 N to the left
40 N to the right
40 N to the left
20 N to the right
What is the net force shown in this diagram?
90 N to the right
90 N to the left
30 N to the right
30 N to the left
Which law states that, "An object at rest will remain at rest and an object in motion will remain in motion unless acted upon by an outside force"?
First Law of Thermodynamics
Newton's First Law of Motion
Law of Gravity
Newton's Third Law of Motion
A car traveling at a constant speed in one direction has what type of forces acting on it?
Balanced Forces
Unbalanced Forces
What type of heat transfer is shown in the diagram where the person is touching the pot?
Radiation
Friction
Convection
Conduction
What type of heat transfer is shown for "C"?
Conduction
Convection
Radiation
Thermal Equilibrium
What type of heat transfer is indicated at "B" in this diagram?
Conduction
Convection
Radiation
Thermal Equilibrium
What states of matter are involved in convection heat transfer?
Liquids & Gases
Solids and Liquids
Solids & Gases
Why does a large container of water at 100 degrees have MORE thermal energy than a small container of water at the same temperature?
The small container has more particles so it has more total energy
The small container has less particles so it has more total energy
The large container has more particles so it has more total energy
The large container has less particles so it has more total energy
What scientific phenomenon is shown in the diagram?
Newton's 1st Law of Motion
Friction
Thermal Equilibrium
Gravity
Which of the following is NOT a good conduction of heat?
Wood
Aluminum
Copper
Glass
Which of the following is a good insulator for heat?
Plastic
Steel
Aluminum
Glass
What happens to particles of matter as heat is added to them?
They speed up and get closer together
The slow down and get closer together
The speed up and get further apart
They speed up and get closer together
How much energy from the Sun makes it from one trophic level to the next?
90%
10%
50%
100%
In which trophic level would herbivores be located on an energy pyramid?
Trophic Level 1
Trophic Level 2
Trophic Level 3
Trophic Level 4
Organisms on trophic level 3 would get their energy from what organisms?
From producers
From herbivores
From the secondary consumers
From the tertiary consumers
Which organism would get the least amount of energy from the Sun?
Eagle
Snake
Frog
Trees
Which of the organisms in this food web could be both a tertiary and a secondary consumer based on what food chain you are looking at?
Deer
Snake
Eagle
Frog
Consider this food web. If the tree gets 475 J of energy from the Sun, how much of that energy would be available to the owl?
47.5J
4.75J
.475J
.0475J
Consider the energy pyramid. If the grass gets 3,762 kcal of energy from the Sun, how much of that energy will be available to the herbivores?
376.2 kcal
37.62 kcal
3.762 kcal
.3762 kcal
