WorksheetsQ. 2 Review
Total questions: 72
Worksheet time: 1hrs 23mins
To make an object move you must first apply ---
an opposing force
an unbalanced force
a stationary force
a vertical force
a force is best defined as ---
the application of weight
a push or pull that is exerted on matter
the flow of electric charges
a bond in which electrons are shared
A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts --
0 N of force
less than 20 N of force
20 N of force
more than 20 N of force
Which change would require more force to pull the wooden block up the ramp?
Have the student use two hands
Reduce the mass of the wooden block.
Restack the books so the thinnest book is on the bottom.
Glue sandpaper to the surface of the ramp.
Oliver stepped onto a three-car subway train with standing room only. What caused him to fall backward into other riders when the train suddenly moved forward?
He was riding in the last car of the train.
He had heat exhaustion from the overcrowded train.
Oliver's body resisted a change in the subway train's inertia.
Oliver's body was responding to the force of gravity.
Which law of motion predicts that a moving hockey puck will continue to move in the same direction at the same speed unless acted upon by another force?
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
Newton's Law of Universal Gravitation
Which law explains the relationship among mass, force and acceleration?
Universal Law of Gavitation
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
The force of an object, with a certain mass accelerating at a certain rate, can be determined by using the equation below.
force = mass x acceleration
Which object would have the greatest force?
A 5 kg object accelerating at 10 m/s
A 5 kg object accelerating at 20 m/s
a 20 kg object accelerating at 4 m/s
a 20 kg object accelerating at 3 m/s
The diagram below show the forces acting on a soccer ball.
In which of the diagrams will the ball remain motionless?
W
X
Y
Z
In the diagram below, a girl sits on a sled and slides down a hill of snow. Which arrow represents the force of friction opposing the motion of the sled down the hill?
Arrow A
Arrow B
Arrow C
Arrow D
Which of these examples best illustrates Newton's Second Low of Motion?
A 100 Ib boy has twice as much inertia as a 200 Ib boy.
A truck needs a more powerful engine than a small car.
A hockey puck slides easily across the ice.
A satellite stays in orbit for a long time.
According to Newton's Third Law of Motion, if Mike pushes down on the springboard to being his dive, what is the reaction force?
Mike splashing into the water
The springboard pushing Mike into the air
The height of the water when Mike enters the water
The sound the board makes as he pushes into the air
Which principle best explains why the sprinkler spins?
Every action has an equal and opposite reaction.
Solid substances are usually more dense than liquid substance.
Energy is released when water condenses.
Most substances expand when heated and contract when cooled.
Ana pushed on a big rock in her back yard. She was unable to get it to move because she did not -
apply enough force
have a good grip on the rock
have enough mass
weigh enough
Many bicycles use a hand brake to control their speed. When the brake is engaged, a rubber pad presses against the tire. What force of motion does the hand brake rely upon to slow the bicycle?
Gravity
Friction
Electricity
Magnetism
Which of the following situations is an example of Newton's third law of motion?
A boy jumping on a trampoline
A boy falling forward when a bus stops
A chair sitting on the floor
An apple falling from a tree
In a head-on collision, a person who is not wearing a seat belt continues to move forward at the original speed of the car because of -
weight
mass
gravity
inertia
A recent space shuttle mission carried a piece of cargo that had a mass of 122 kg with a weight of 1195.6 N. While orbiting the Earth, the astronauts weighted the equipment again and found it to be 24.4 N.
What was the mass of the equipment at this point?
122 kg
7.6 kg
4.88 kg
2.49 kg
Object is...
constant speed
speeding up
slowing down
stopped
Object is...
(hint: equal distance... equal time)
constant speed
speeding up
slowing down
stopped
Object is...
constant speed
speeding up
slowing down
stopped
Object is...
(1) speeding up,
(2) constant speed,
(3) speeding up
(1) constant speed.
(2) stopped,
(3) constant speed
Object is ...
(check that "y" axis!)
stopped
constant speed
speeding up
Object is ...
stopped
constant speed
speeding up
Object ...
accelerates... then goes constant speed... then accelerates again
goes constant speed... stops... goes constant speed
An element’s reactivity and other chemical properties are determined by the number of -
isotopes it has
oxidation states
orbitals in an atom
valence electrons
Molybdenum has an atomic number of 42. This means that molybdenum –
has a freezing point of 42° Fahrenheit.
belongs to Group 42 on the Periodic Table.
can form 42 bonds with other atoms.
contains 42 protons in its nucleus.
Which of the following properties of carbon distinguishes it from all other elements?
Carbon has six protons in its nucleus.
Carbon is a gray solid at room temperature.
Carbon forms compounds with oxygen
Carbon can be found in Earth’s crust.
The table provides information on four different elements. Based on the information provided, it can be concluded that –
sodium is the most reactive.
strontium is the best conductor.
phosphorus is the least stable.
aluminum has the most protons.
Which particles would you find in the nucleus of an atom?
Protons and neutrons
Electrons and protons
Electrons only
Neutrons and electrons
What is the name for the type of subatomic particle that is electrically neutral and found in the nucleus of an atom?
Proton
Neutron
Ion
Electron
What is the mass of an atom with seven protons, seven neutrons, and eight electrons?
15
14
13
22
A student is shown a picture of the atom to the side. What element, based on the subatomic particles in the atom, is shown?
Beryllium
Lithium
Helium
Oxygen
What element contains 7 protons and 5 valence electrons?
Boron
Vanadium
Nitrogen
Lithium
Compare the data shown in the table. What reasonable conclusion can be made from the information given?
Element 1 has the same atomic mass as Element 4
Element 3 has a very similar chemical properties as Element 4
Element 1 has very similar chemical properties as Element 3
None of the above
Four students were asked to name the parts of an atom that determine the atom’s identity and chemical properties. The students’ responses are shown in the table below.
Which student’s responses are correct?
Student 1
Student 2
Student 3
Student 4
Based on the data, which number shows the correct location of the element with 2 valence electrons and 3 energy levels.
1
2
3
4
Based on the data, which number shows the correct location of the element with 2 valence electrons and 1 energy levels.
1
2
3
4
Which two elements on the periodic table are in the same group?
Na and He
O and C
Li and Ne
He and Ar
Which pair of properties describes the elements in Group 1?
They are chemically stable
They have 8 valence electrons
They are the most reactive metals
They are the most reactive non metals
How many valence electrons are in an element in group 15 in the periodic table?
5
15
7
8
Which two atoms are elements in the same group in the periodic table?
Atom 3 and Atom 4
Atom 1 and Atom 4
Atom 3 and Atom 2
Atom 1 and Atom 2
Based on the data, which number shows the correct location of the element that is brittle and dull.
1
2
3
4
Based on the data, which number shows the correct location of the element that is malleable and a good conductor.
1
2
3
4
Which of these formulas contain equal numbers of nitrogen atoms?
Formulas I and III
Formulas I and IV
Formulas I, II and V
Formulas II and III
In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?
H3PO4
H2SO4
HCIO3
H2O
How many atoms in all are found in the compound above?
3
4
5
6
Which of the models best represents CaCO3?
How many elements are in C6H12O6?
1
2
3
4
Which of the following could be determined using only the chemical formula of a carbohydrate?
A. The chemical properties of the carbohydrate.
B. The conductivity of the carbohydrate in water.
C. The number of atoms of each element contained in the carbohydrate.
D. The physical state of the carbohydrate at standard room temperature.
How many atoms of hydrogen (H) are found in (NH4)2CO3?
8
4
2
9
During an investigation, two flasks of unknown, clear liquids are combined in a beaker and the following observations are recorded. Which of the listed observations indicate a new substance was formed during this investigation?
I. Solution color remains clear
II. The amount of solution in the beaker increased
III. Solution temperature changed from 10 degrees C to
20 degrees C
IV. Some of the liquid remained in the flasks
A. I and II
B. I, II, and IV
C. III, only
D. I and III
Which of the following examples would support that a chemical reaction has occurred?
A. After putting liquid batter into a hot pan, the batter solidifies and begins to turn brown.
B. After turning on a blender filled with fruits, the fruit is chopped up and mixed together.
C. After taking a tray filled with ice cubes out of the freezer, the cubes begin to melt.
D. After adding a spoonful of sugar to a mug of hot coffee, the sugar dissolves completely.
When vinegar and baking soda are combined, bubbles begin to form. Bubbles are evidence of a chemical reaction because they -
A. are less dense than air.
B. form at a fast rate.
C. released a gas
D. have no mass.
An experiment is performed in which a crystalline substance is added to a beaker filled with room temperature water. All of the following observations would serve as evidence that a chemical change occurred, EXCEPT –
A. the crystals dissolve.
B. a precipitate is formed.
C. the bottom of the beaker feels warm to the touch.
D. bubbles begin forming within the water.
Is this equation balanced?
Yes
No
Is this equation balanced?
Yes
No
Which reactant is missing from the equation shown?
(What should go in the place of the "X"?)
One hydrogen atom.
Three hydrogen atoms.
Four oxygen atoms.
