WorksheetsPhysical Science Semester 1 Test (2025)
Total questions: 69
Worksheet time: 40mins
Name
Class
Date
1.
George is writing a newspaper article about the fire at the local library. His introductory paragraph has an example of the conservation of mass.
Select the sentence that illustrates the conservation of mass.
a)
Our town library dealt with a terrible fire in one of its rooms over the weekend.
b)
The room contained much-loved books and magazines.
c)
Firefighters rushed to the scene but were too late.
d)
All that remained of the books and magazines were ash, water vapor, and carbon dioxide fumes.
e)
The mayor arrived soon afterward and urged everyone to donate to help rebuild this important community building.
2.
Min is conducting an experiment where he compares the properties of water and lemonade. The first stage of the experiment is focusing only on the physical properties of the water and lemonade. Which
comparison point would Min not use in the first stage?
a)
A. color
b)
B. conductivity
c)
C. flammability
d)
D. boiling point
3.
Since the moon's gravity is less than Earth's, all objects, including mammals, have different weights on the moon than on Earth. Use the table below to calculate how much a dog weighs on the moon.
a)
A. 25 lbs
b)
B. 30 lbs
c)
C. 40 lbs
d)
D. 45 lbs
4.
Based on the information from the table, what is her weight on Earth?
How would her mass be affected by the different gravities of each of the planetary bodies?
Explain how gravity affects mass.
4 lines
5.
Annie learns that the compound sulfuric acid is called the universal chemical. The acid is used in everything from gasoline to paper. Annie uses beads in three different colors to model sulfuric acid. Based on the model, what is the chemical formula of sulfuric acid?
a)
A. S2HO4
b)
B. O2H4S
c)
C. S4O2H
d)
D. H2SO4
6.
When crushing cans, the amount of material in each can is unchanged. Which of the following describes the process that is taking place?
a)
A. a change in chemical bonds within the object
b)
B. a change in matter that produces one or more new substances
c)
C. a change in mass of an object
d)
D. a change in form or appearance of matter
7.
Rusting is a chemical change that some metal and steel objects undergo when exposed to oxygen. Which option best describes a chemical change?
a)
A. a change from solar energy to chemical energy
b)
B. a change in matter that produces one or more new substances
c)
C. a change from a liquid state to a gas state
d)
D. a change in form or appearance of matter
8.
Teresa stays home from school because she has a cold. Her father makes her chicken noodle soup and urges her to drink lots of pulp free orange juice. Both the soup and juice are mixtures, but one is a homogeneous mixture and the other is heterogeneous.
Which food item is homogeneous and which is heterogeneous? Explain.
4 lines
9.
What property of the water makes it possible for a needle to lie on the surface of water?
a)
A. viscosity
b)
B. definite volume
c)
C. surface tension
d)
D. boiling point
10.
The planet Venus is surrounded by a thick layer of gases. In fact, the atmospheric pressure on Venus is over 90 times greater than the atmospheric pressure on Earth. Which statements are true about boiling water on Venus?
Choose the two statements that apply.
a)
A. Water will boil at a higher temperature on Venus than on Earth.
b)
B. Water will boil at a lower temperature on Venus than on Earth.
c)
C. The temperature of water will remain constant while it boils.
d)
D. The temperature of water will increase as it boils.
11.
People who have certain lung diseases, such as emphysema or lung cancer, often have to use oxygen from tanks. A large volume of oxygen can be put into a small tank because oxygen is a gas, and gases can be (a) .
12.
Which of these changes are examples of sublimation? Choose the two statements that apply.
a)
A. Clothing is hung outside on a day when the temperature is below the freezing point of water. The clothes dry, even though they freeze first.
b)
B. An ice cube melts on the floor, then it evaporates.
c)
C. Bromine is a reddish-brown liquid element. In a closed container, a reddish-brown gas exists above the surface of the bromine.
d)
D. Dry ice changes directly to carbon dioxide gas.
13.
Would you feel like a superhero if you could melt metal just by holding it? The element gallium is a solid at room temperature, but it will reach its melting point and melt if you hold it in your hand. If you pour the liquid gallium into a container at room temperature, it will become solid again.
How do the melting point and the freezing point of gallium compare to each other?
a)
A. The freezing point of gallium is higher than its melting point.
b)
B. The freezing point of gallium is lower than its melting point.
c)
C. The freezing point of gallium equals its melting point.
d)
D. Both the freezing point and the melting point of gallium vary.
14.
Chase and Bernie were ice-fishing at a frozen pond where the temperature was –4⁰C. As the boys sat on the ice, the thermal energy of the ice (decreased /increased / stayed the same / decreased, then increased), and some of the ice (condensed / froze / melted / sublimed). As it sat in the cold air, the thermal energy of the water on the glove (decreased / increased / stayed the same / decreased, then increased), and the water on the glove (condensed / froze / melted /sublimed).
a)
decreased, melted, stayed the same, sublimed
b)
increased, froze, decreased, condensed
c)
increased, melted, decreased, froze
d)
decreased then increased, sublimed, stayed the same, melted
15.
What are the three states of matter commonly found on Earth?
a)
plasma, liquid gas
b)
solid, liquid, plasma
c)
solid, plasma, gas
d)
solid, liquid, gas
16.
Which state of matter can be seen in lightning?
(a)
17.
Which states of matter both have a fixed volume?
a)
gas and solid
b)
plasma and gas
c)
solid and liquid
d)
gas and liquid
18.
Imagine your playing basketball in the gym, and all the
basketballs were firm and bounced well. When you went outside, the same basketballs seemed a bit flat and would not bounce well.
Which statement provides the best explanation for what happened to the basketballs?
a)
A. The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls increased.
b)
B. The temperature outside was warmer than the temperature in the gym, so the pressure of the air in the balls increased.
c)
C. The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased.
d)
D. The temperature outside was warmer than the temperature in the gym, so the pressure of the air in the balls decreased.
19.
Which of the following best describe gas particles? (Choose all that apply)
a)
Move randomly
b)
collide into eachother
c)
move slow
d)
high kinetic energy
e)
move orderly
20.
Ionization changes matter from a gas state to a(n) (a) state.
21.
What are three ways pressure can increase in this system?
a)
Make the container smaller
b)
Heat the container
c)
Add more air
d)
Make the container bigger
e)
Cool the container
22.
Which variable is changed when the container is heated?
a)
P
b)
V
c)
n
d)
R
e)
T
23.
What are three ways temperature can increase in this system?
a)
Make the container smaller
b)
Heat the container
c)
Add more air
d)
Make the container bigger
e)
Cool the container
24.
If a balloon is put inside a vacuum chamber, and the vacuum is turned on, why does the balloon expand?
4 lines
25.
How do hot air balloons "float" in our atmosphere?
a)
There are less gas particles inside the balloon than in our atmosphere
b)
The particles inside the balloon have more kinetic energy, taking up more space
c)
The air inside the balloon is less dense than our atmosphere
d)
all of the above
26.
What group of elements do Ca, Be, and Mg belong to?
a)
Halogens
b)
Alkali Metals
c)
Alkaline Earth Metals
d)
Noble Gases
27.
Which element is a noble gas?
a)
Copper
b)
Calcium
c)
Argon
d)
Potassium
28.
Which element is a transition metal?
a)
Copper
b)
Calcium
c)
Aluminum
d)
Potassium
29.
Which element is a metalloid?
a)
Copper
b)
Silicon
c)
Titanium
d)
Potassium
30.
Which element is a nonmetal?
a)
Copper
b)
Chlorine
c)
Aluminum
d)
Technetium
31.
Which element is an alkali metal?
a)
Magnesium
b)
Chlorine
c)
Aluminum
d)
Lithium
32.
Which element is an alkaline earth metal?
a)
Magnesium
b)
Chlorine
c)
Aluminum
d)
Lithium
33.
How many valence electrons does a Chlorine atom have?
(a)
34.
All halogens are highly reactive. What causes these elements to have similar chemical behavior?
a)
They want to gain one electron
b)
They want to lose one electron
c)
They have a full outer shell
d)
None of the above
35.
What property do noble gases share?
a)
They have seven valence electrons
b)
They have a full outer shell
c)
They have two valence electrons
d)
none of the above
36.
How is an ion different from its parent element?
a)
They have a charge
b)
They have gained an electron
c)
They have lost an electron
d)
all of the above
37.
True or false: A covalent bond is formed when atoms share one or more pairs of electrons.
a)
True
b)
False
38.
The chemical behavior of different elements is determined by the:
a)
a. number of neutrons in the nucleus
b)
b. number of protons in the nucleus
c)
c. number of electrons in the outermost energy level.
d)
d. total number of electrons in all of the energy levels.
39.
Which of the following are examples of chemical reactions? Pick 3
a)
Color change
b)
Fizzing
c)
Temperature Change
d)
Bending metal
e)
Glass Shattering
40.
Alex saw a rusty old car in an abandoned lot. Because he had recently read about chemical reactions, he began to wonder how the rust formed. What happened to cause the rust on the steel car?
4 lines
41.
After learning about the law of conservation of mass, Sammy became interested in balancing equations. He knew that the symbol for aluminum was Al and silver tarnish was Ag2S. He also knew that mixing the two chemicals yielded pure silver, or Ag, in an aluminum sulfide solution. Here is the equation showing this reaction:
This equation is (synthesis / unbalanced / replacement / balanced), and it represents
a(n) (unbalanced / balanced / synthesized / displacement) chemical
reaction.
(a)
42.
…H2 +…O2 → …H2O can be balanced by adding coefficients
a)
1, 1, 2
b)
2, 2, 2
c)
2, 1, 2
d)
Balanced
43.
…CH4 + …O2 → …CO2 + …H2O is balanced by
a)
1, 2, 1, 2
b)
1, 1, 1, 2
c)
4, 3, 2, 1
d)
Balanced
44.
…C3H8 + …O2 → …CO2 + …H2O is balanced with coefficients
a)
1, 2, 5, 4
b)
1, 5, 3, 4
c)
1, 3, 5, 9
d)
Balanced
45.
What is the Lewis dot structure for O?
a)
#1
b)
#2
c)
#3
d)
#4
46.
Give the name of any element that would have a Lewis dot structure like this:
a)
Flourine
b)
Chlorine
c)
Iodine
d)
All of the Above
47.
What is the Lewis dot structure for silicon?
a)
3
b)
4
c)
5
d)
6
e)
7
48.
What is the maximum number of chemical bonds that could be formed by an element in Group 18?
a)
1
b)
2
c)
3
d)
None of the above
49.
Which group has an oxidation number of -2?
a)
16
b)
13
c)
14
d)
15
e)
17
50.
Which group has an oxidation number of -1?
a)
17
b)
13
c)
14
d)
15
e)
16
51.
Which group has an oxidation number of +1?
a)
1
b)
2
c)
13
d)
14
e)
15
52.
What is the oxidation number of Chlorine?
a)
-2
b)
-1
c)
0
d)
+1
e)
+2
53.
Name this reaction.
a)
Addition
b)
Synthesis
c)
Combustion
d)
Recombination
e)
Displacement
54.
Name this reaction.
a)
Decomposition
b)
Combustion
c)
Recombination
d)
Addition
e)
Synthesis
55.
Name this reaction.
a)
Combustion
b)
Recombination
c)
Addition
d)
Synthesis
e)
Decomposition
56.
Name this reaction.
a)
Double Displacement
b)
Precipitation
c)
Combustion
d)
Decomposition
e)
Recombination
57.
Name this reaction.
a)
Displacement
b)
Replacement
c)
Combustion
d)
Double Replacement
e)
Decomposition
58.
If Na+ were to combine with CaCl2, what component of CaCl2 would be replaced by the Na+?
a)
Ca
b)
Cl
c)
Neither
59.
If F- were to combine with AlCl3, what component of AlCl3 would be replaced by the F-?
a)
Al
b)
Cl
c)
Neither
60.
(Pick 2) Predict the products for this displacement reaction: Li + AlCl3 -->
a)
Al
b)
LiCl
c)
LiCl3
d)
Al2Li
e)
Li
61.
Complete the sentence using word kinetic, potential or molecular. The energy of moving matter is called (a) energy.
62.
Celia plays center field on the school softball team. She is one of the best hitters on the team. When she swings the bat, she uses (transfer / energy / force / motion) to change the (energy / transfer / force / motion) of the bat by applying a (transfer / motion / force / energy) to it.
a)
energy, motion, force
b)
force, transfer, motion
c)
motion, transfer, energy
d)
none of the above
63.
Jordan wants to know the difference between using a 60-W and 100-W lightbulb in her lamp. She calculates the energy it would take to use each bulb for 30 seconds by using this equation: Energy Transfered (J) = Power (W) x time (s)
What is the difference in the amount of energy transferred by the two bulbs during this time?
a)
A. 40 J
b)
B. 1200 J
c)
C. 1800 J
d)
D. 3000 J
64.
The Kentucky Derby is one of the most exciting horse races run every year. In 1973, the horse Secretariat set a record that still stands. This 500-kg horse ran the 2000-m track in 120 s. What was Secretariat’s average kinetic energy? (1 kJ = 1000 J) (KE = 1/2mv^2)
a)
A. 4.2 kJ
b)
B. 8.3 kJ
c)
C. 69.0 kJ
d)
D. 139.0 kJ
65.
After 0.2 s, the kinetic energy of a falling egg is 0.5 J. If its mechanical energy is 2.3 J, what is its potential energy?
a)
A. 1.2 J
b)
B. 1.8 J
c)
C. 2.8 J
d)
D. 4.6 J
66.
Sunlight enables plants to use water and carbon dioxide during photosynthesis to make and store sugar. Any animal that eats the plants can convert the sugar into the energy it needs to move from place to place. Which three types of energy are involved in this example?
a)
A. chemical
b)
B. electromagnetic
c)
C. kinetic
d)
D. thermal
67.
Michael loves to play the piano. When he hits a key, energy from the key starts a (transformation / transfer / conservation / creation) of energy to (a string in the piano / his fingers / your eardrum / the air), to (his fingers / your eardrum / the air / a string in the piano) to (the air / a string in the piano / his fingers / your eardrum), so that you hear the music he plays.
a)
transformation, a string in the piano, the air, your eardrum
b)
creation, his fingers, the air, your eardrum
c)
transfer, a string in the piano, the air, your eardrum
d)
transfer, a string in the piano, the air, his fingers
68.
At what point on the track does the car have the greatest potential energy? The greatest kinetic energy?
a)
A. at the ending point; at the starting point
b)
B. at the starting point; at the ending point
c)
C. at the highest point on the track; at the lowest point on the track
d)
D. at the lowest point on the track; at the highest point on the track
69.
Explain how energy is conserved in the roller-coaster ride. Include descriptions of at least one energy transfer and at least two energy transformations.
4 lines
100 %
