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Checkpoint Review

Total questions: 38

Worksheet time: 40mins

Name
Class
Date
1.

The positive particles of an atom are ___________.

a)

electrons

b)

protons

c)

neutrons

2.

The center of an atom where its neutrons and protons are is called the _____________.

a)

nucleus

b)

electron cloud

c)

center

3.
An atom is made up of protons, neutrons, and electrons.  Which is the smallest subatomic particle?
a)
Proton
b)
Neutron
c)
Electron
d)
Idontknowatron
4.
Each row in a periodic table is called a 
a)
Group
b)
Period
c)
Row
d)
Column
5.
Each column in the periodic table is called a 
a)
period
b)
group
c)
cluster
d)
unit
6.
Which is an electron?
a)
A
b)
B
c)
C
7.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
8.
What is the mass number and name of an element with 8 protons and 8 neutrons?
a)
16 - Carbon
b)
16 - Oxygen
c)
24 - Oxygen
d)
8 - Neon
9.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

10.

What element would have the same number of shells as Sodium?

a)

Nitrogen

b)

Oxygen

c)

Magnesium

d)

Helium

11.

A toy car moved along a 1.2 km track in 6 min. Find the speed of the toy car.

a)

0.2 km/h

b)

1.2 m/min

c)

12 km/h

d)

200 m/h

12.

Lee Ann took 40 min to jog 5 km. What was her average speed in km/h?

a)

 3 ⅓km/h

b)

7.5 km/h

c)

8 km/h

d)

12 km/h 

13.

Which is an example of velocity?

a)

A car driving 55 miles per hour south.

b)

A bicyclist traveling 10 meters per hour.

c)

A roller coaster is traveling 10 meters per second.

d)

A rocket blasting off at 2,500 meters per second.

14.

Speed or Velocity?:

A train is travelling North 220 km/hr

a)

Speed

b)

Velocity

c)

Neither

d)

Both

15.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
16.
Velocity is both ____ and _____. 
a)
speed , direction 
b)
direction, mass
c)
volume, density 
d)
direction, magnitude 
17.

How many atoms of carbon (C) are in C6H12O6?

a)

3

b)

6

c)

12

d)

24

18.

Which is the correct formula for:

3 Hydrogen (H)

1 Sulfur (S)

4 Oxygen (O)

a)

H3SO4

b)

HSO4

c)

H4S3O

d)

H2O

19.

How many TOTAL atoms are in:

H2SO4

a)

6

b)

5

c)

7

d)

3

20.

How many hydrogen atoms are there?

a)

1

b)

4

c)

5

d)

6

21.
Which is an electron?
a)
A
b)
B
c)
C
22.

This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?

a)

3

b)

4

c)

5

23.

How many valence electrons does Tin (Sn) have?

a)

8

b)

7

c)

5

d)

4

24.

How many valence electrons does Bromine (Br) have?

a)

5

b)

6

c)

7

d)

8

25.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom. 
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
26.

Which element is this?

a)

Nickel

b)

Neon

c)

Sodium

d)

Nitrogen

27.

Calculate the net force of the object in the image shown.

Calcula la fuerza neta del objeto en la imagen que se muestra.

a)
20N
b)
35N
c)
5N
d)
25N
28.

Newton's 1st Law is also called the Law of ...

a)

Friction

b)

Inertia

c)

Unbalanced forces

d)

Newtons

29.

You are driving to a birthday party with the cake sitting in the passenger's seat. You slam on your brakes to avoid hitting a deer. This causes the cake to splatter all over your dashboard and the floor of the passenger's side. Which of Newton's Laws best explains why this happens?

a)

Newton's First Law (Inertia)

b)

Newton's Second Law (Net force = mass x acceleration)

c)

Newton's Third Law (Action/Reaction)

d)

Law of Universal Gravitation

30.

Your friend pushes you for making fun of him/her. What is the reaction force?

a)

You pushing back on your friend

b)

You pushing on the ground

c)

There is no reaction force

d)

Your friend pushing on the ground

31.
Newton's Third Law States...
a)
Objects in motion stay in motion and objects at rest stay at rest
b)
Force is equal to mass times acceleration
c)
For each action there is an equal and opposite reaction
32.
A player throws a ball. The action force is the player impact on the ball. The reaction force is...
a)
The force of the ball impact on the player
b)
The force of the grip of the ball
c)
The celebration the player is thinking of
33.
Which of the following examples shows that a chemical reaction has occurred? 
a)
A rock breaks into smaller pieces when it is struck with a hammer.
b)
Rust forms on a hammer that has been left outside to long. 
c)
A cup of water turns pink when a few drops of red food coloring are added. 
d)
A solid is formed when heat is removed from a sample of water. 
34.
A student places a piece of a potato into a container of hydrogen peroxide. One observation the student makes is that bubbles form around the potato. The presence of bubbles might indicate the formation of a new substance because bubbles - 
a)
could show that a gas is forming
b)
always rise to the top of a liquid. 
c)
are almost always perfectly spherical.
d)
usually burst after a few minutes.
35.
Hydrogen peroxide breaks down to form water and oxygen gas. Which observation is evidence that a chemical reaction has occurred?
a)
The mass of the solution remains the same.
b)
 Phase changes are observed.
c)
 The color of the solution remains clear.
d)
The temperature of the solution increases. 
36.
Which of the following is an example that includes evidence of a chemical reaction?
a)
A sample of zinc is placed in water and it settles to the bottom
b)
A solid block of ice is heated and it completely melts into a liquid. 
c)
Sugar that is burned gives off an odor and turns brown and then black.
d)
A tomato is placed into a blender and chopped up into smaller pieces.
37.
Evidence of a chemical reactions is anything that shows - 
a)
a new substance has formed
b)
a solid dissolved in a liquid
c)
interaction between 2 gases
d)
a change in the state of matter
38.
For an investigation a student poured a blue solution of CuSO4 into a beaker. The student placed a shiny, silver-colored strip of zinc metal in the solution and observed the changes.
The student inferred that a chemical reaction occurred. What evidence supports this inference?
a)
A dark solid formed on the zinc metal.
b)

The zinc metal remained silver-colored and shiny
c)
The CuSO4 solution turned blue when the zinc metal was added.
d)
None of these

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