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WorksheetsBenchmark Review
Total questions: 52
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
Which of the following formula represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
2.
What is the difference between a compound and an element?
a)
Compounds are made up of elements and can be chemically separated. Elements cannot be separated.
b)
Elements make up compounds. Elements can be separated but compounds cannot be separated.
c)
Elements are found on the periodic table and compounds are found on the dining room table.
3.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
4.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
5.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
6.
A distance vs. time graph shows an object's
a)
frame of reference
b)
speed
c)
acceleration
d)
favorite food
7.
Velocity is
a)
speed and acceleration
b)
constant speed
c)
a frame of reference
d)
speed in a given direction
8.
How long did one of the runner's rest?
a)
8 seconds
b)
13 seconds
c)
5 seconds
d)
50 seconds
9.
What is happening at D?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Slower steady speed; moving away from the starting position
10.
a)
The boat came to a stop after it traveled for 10 minutes.
b)
The boat was at rest from 20 to 40 minutes.
c)
The boat traveled the fastest in the last 20 minutes.
d)
The boat traveled the shortest distance in the first 20 minutes.
11.
Which of the following elements is required in an organic compound?
a)
nitrogen
b)
oxygen
c)
carbon
d)
sodium
12.
All of the following elements are common to organic compounds EXCEPT
a)
iodine
b)
hydrogen
c)
phosphorous
d)
oxygen
13.
The total number of protons and neutrons in an atom is called the...
a)
Atomic number
b)
Proton number
c)
Mass number
d)
Weight number
14.
The only subatomic particle that carries a positive charge is the _____.
a)
electron
b)
nucleus
c)
neutron
d)
proton
15.
How REACTIVE an element is is based on
a)
protons
b)
atomic number
c)
electrons
d)
valence electrons
16.
Which subatomic particle has a negative charge?
a)
Electron
b)
Proton
c)
Neutron
d)
Positron
17.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
18.
An element's identity is determined by the number of
a)
electrons.
b)
protons.
c)
neutrons.
d)
valence.
19.
Group 18 elements are known as the _____ _____ and have full valence shells.
a)
royal gases.
b)
supreme solids.
c)
noble gases.
d)
legit liquids.
20.
Elements in the same ________ are more chemically similar.
a)
group
b)
period
c)
club
d)
table
21.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
22.
The small number that is written below the symbol and shows how many atoms of each element is present.
a)
Compound
b)
Molecule
c)
Coefficient
d)
Subscript
23.
The large number written in front of a chemical formula. It shows the number of molecules.
a)
Molecule
b)
Compound
c)
Coeffiecient
d)
Subscript
24.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
25.
The arrow symbol used in a chemical equation
a)
Yield sign
b)
Subscript
c)
Coefficient
d)
Chemical formula
26.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
27.
In a chemical reaction, everything to the right of the arrow is called ______________.
a)
Products
b)
Yields
c)
Molecules
d)
Reactants
28.
The law of conservation of mass states that....
a)
Matter can be made
b)
Matter can be destroyed
c)
Matter can neither be made or destroyed
29.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
30.
The blue numbers in the image below represent ________
a)
I don't know
b)
coefficients
c)
subscripts
d)
none of the answers are correct
31.
The large number written in front of a chemical formula. It shows the number of molecules.
a)
Molecule
b)
Compound
c)
Coeffiecient
d)
Subscript
32.
The small number that is written below the symbol and shows how many atoms of each element is present.
a)
Compound
b)
Molecule
c)
Coefficient
d)
Subscript
33.
A physical change is?
a)
It changes the object into something different
b)
Objects or substances undergo a change that does not change their chemical composition
c)
it is just like a chemical reaction
d)
Paper burning
34.
A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?
a)
The cart will speed up.
b)
The cart will slow down.
c)
The cart will move at a constant speed in a straight line.
d)
The cart will fly to never never land!
35.
Are forces balanced or unbalanced when a plane is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
36.
The boat moves to the left at a speed of 4 m/s. The current moves to the right at 2 m/s. What will happen if the current increases to 3 m/s?
a)
The boat will speed up.
b)
The boat will slow down.
c)
The boat will move backwards.
d)
The boat will continue sailing to the left at a constant speed of 4 m/s.
37.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
38.
Calculate the Net Force.
a)
40N, Left
b)
40N, Right
c)
0N, Balanced
d)
75N, Right
39.
Describe the speed of the object from 4-6 seconds using the distance vs. time graph.
a)
Increasing speed
b)
Decreasing speed
c)
Not moving
d)
Constant speed
40.
Describe the speed of the object from
0-2 seconds using the distance vs. time graph.
0-2 seconds using the distance vs. time graph.
a)
Constant
b)
Speeding up
c)
Slowing down
d)
Not moving
41.
Describe the speed of the object from
5-6 seconds using the speed vs. time graph
5-6 seconds using the speed vs. time graph
a)
Speeding up
b)
Slowing down
c)
Not moving
d)
Constant speed
42.
Describe the speed of the object from
5-6 seconds using the speed vs. time graph
5-6 seconds using the speed vs. time graph
a)
Speeding up
b)
Slowing down
c)
Not moving
d)
Constant speed
43.
While on a trip, a family travels east from San Antonio to Houston going 70 mph. This represents...
a)
Speed
b)
Acceleration
c)
Velocity
44.
A dog runs on the sidewalk 9 mi/hr. This represents...
a)
Speed
b)
Acceleration
c)
Velocity
45.
A child rides a bike around the block. This represents...
a)
Speed
b)
Velocity
c)
Acceleration
46.
Change in speed over a given period of time is
a)
velocity
b)
motion
c)
speed
d)
acceleration
47.
A distance vs. time graph shows an object's
a)
frame of reference
b)
speed
c)
acceleration
d)
favorite food
48.
If a ball of cheese is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving.
49.
What is the speed of an object that travels 20 meters in 4 seconds?
a)
80 m/s
b)
0.2 m/s
c)
5 m/s
d)
24 m/s
50.
A(n) __________ is a push or pull.
a)
newton
b)
acceleration
c)
force
d)
momentum
51.
A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
52.
Pushing a child on a swing is easier than pushing an adult on the same swing. This represents which law?
a)
1st Law
b)
2nd Law
c)
3rd Law
d)
4th Law
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