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Chemical Reaction Pretest

Total questions: 55

Worksheet time: 41mins

Name
Class
Date
1.

The smallest particle into which an element can be divided and still be the same element is a(n)

a)

proton

b)

neutron

c)

electron

d)

atom

2.

Which subatomic particle has a positive charge?

a)

proton

b)

nuetron

c)

electron

d)

atom

3.

Which subatomic particle has a negative charge?

a)

proton

b)

neutron

c)

electron

d)

atom

4.

Which subatomic particle has a neutral (0) charge?

a)

proton

b)

nuetron

c)

electron

d)

atom

5.

Why is the overall charge of an atom neutral (0)?

a)

They have the same number of protons and neutrons.

b)

They have the same number of protons and electrons.

c)

They have the same number of electrons and neutrons.

6.

Which TWO of the following subatomic particles are inside the nucleus?

a)

protons

b)

electrons

c)

neutrons

d)

There are no subatomic particles in the nucleus of an atom.

7.

The number of which subatomic particle determines the element of an atom (if it's carbon, oxygen, nitrogen, etc.)?

a)

proton

b)

neutron

c)

electron

d)

Subatomic particles do no determine the element of an atom.

8.

How many protons does fluorine have?

a)

19

b)

1

c)

9

d)

10

9.

How many neutrons does nitrogen have?

a)

7

b)

14

c)

0

d)

6

10.

How many electrons does silicon have?

a)

28

b)

14

c)

0

d)

10

11.

Using the diagram as a reference, how many electrons does lithium have in its OUTER shell?

a)

1

b)

3

c)

8

d)

2

12.

Using the diagram as a reference, how electrons does carbon have in its OUTER shell?

a)

2

b)

6

c)

4

d)

1

13.

Using the diagram as a reference, how electrons does neon have in its OUTER shell?

a)

10

b)

8

c)

2

d)

6

14.

The positive particle in an atom.

a)

proton

b)

neutron

c)

electron

d)

electron cloud

15.

How many protons does Nitrogen have?

a)

7

b)

8

c)

14

d)

14.01

16.

Which of the labeled structures is a neutron?

a)

a

b)

b

c)

c

17.

The negative particle in an atom.

a)

proton

b)

neutron

c)

electron

18.

What is the mass number of this element?

a)

7

b)

8

c)

14

d)

14.01

19.

Which of the labeled structures is an electron?

a)

a

b)

b

c)

c

20.

Scientist that proposed that electrons move in energy levels around the nucleus.

a)

Dalton

b)

Rutherford

c)

Thomson

d)

Bohr

21.

If an element has an atomic number of 11 and a mass number of 23, how many neutrons does it have?

a)

11

b)

12

c)

23

d)

34

22.

Scientist who discovered the neutron.

a)

Bohr

b)

Chadwick

c)

Rutherford

d)

Thomson

23.

The neutral particle in an atom.

a)

proton

b)

neutron

c)

electron

24.

He challenged Democritus's ideas and did not believe empty space existed between atoms.

a)

Chadwick

b)

Bohr

c)

Aristotle

d)

Dalton

25.

Which of the following particles is NOT found in an atom's nucleus?

a)

proton

b)

neutron

c)

electron

26.

An element has 17 protons and 18 neutrons in the nucleus. What is the element's mass number?

a)

17

b)

18

c)

1

d)

35

27.

Scientist that discovered the proton.

a)

Bohr

b)

Chadwick

c)

Rutherford

d)

Thomson

28.

Which of the labeled structures is a proton?

a)

a

b)

b

c)

c

29.

He created the model of the atom we use today.

a)

Aristotle

b)

Rutherford

c)

Bohr

d)

Dalton

30.

What is the chemical symbol of this element?

a)

79

b)

Au

c)

AU

d)

gold

31.

The smallest piece of an element:

a)

quark

b)

electron

c)

shell

d)

atom

32.

The cloud-like space that electrons travel around:

a)

nucleus

b)

shell

c)

neutrons

d)

Oort cloud

33.

Protons and neutrons are found in the center of the atom called the:

a)

nucleus

b)

neutron

c)

shell

d)

cell

34.

Classification system for elements is called:

a)

Elements

b)

Periods

c)

The Periodic Table of Elements

d)

Families

35.

The subatomic particles are called:

a)

protons, nucleus and electrons

b)

protons, electrons and neutrons

c)

protons, positives and negatives

d)

cloud, shell and quarks

36.

Substances that have only one kind of atom are called:

a)

elements

b)

nitrogen

c)

electrons

d)

nucleus

37.

Electrons have a _____ charge.

a)

neutral

b)

negative

c)

positive

d)

both positive and negative

38.

What is the study of matter?

a)

Chemistry

b)

Biology

c)

Earth Science

d)

Physics

39.

_____ is what scientists think atoms are like.

a)

Chemistry

b)

The box

c)

The atomic structure

d)

The atomic theory

40.

The abbreviation for an element:

a)

element name

b)

atomic number

c)

chemical symbol

d)

atomic symbol

41.

Who invented the simplified version of the atom?

a)

Dmitri Mendeleev

b)

Niels Bohr

c)

Sir Isaac Newton

d)

Albert Einstein

42.

The scientist who invented the classification system for the elements:

a)

Dimitri Mendeleev

b)

Niels Bohr

c)

Sir Isaac Newton

d)

Albert Einstein

43.

What is the sum of an atom's protons and neutrons called?

a)

atom

b)

atomic theory

c)

atomic mass

d)

atomic number

44.

The columns on the periodic table that are color coded and describe the number of electrons in the outer shell of the atomic structure of the element:

a)

families

b)

groups

c)

periods

45.

The rows or periods on the periodic table describe:

a)

the same number of outer electrons

b)

the same number of shells

c)

the same number of protons

d)

the same mass

46.

The _____ is based on the number of protons in the nucleus of the atom.

a)

atomic structure

b)

periodic table of the elements

c)

atomic number

d)

atomic mass

47.

What subatomic particle is represented by this symbol (+):

a)

neutron

b)

proton

c)

electron

48.

What subatomic particle is represented by this charge (-):

a)

neutron

b)

proton

c)

electron

49.

Why do the electrons surround the nucleus?

a)

the negative electrons are attracted to the neutral neutrons

b)

the negative electrons are repelled by the neutral neutrons

c)

the negative electrons are attracted to the positive protons

d)

the negative electrons are repelled by the positive protons

50.

All matter is made of _____.

a)

light

b)

energy

c)

cells

d)

atoms

51.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
52.
Particles in an atom that are neutral and have no charge are 
a)
negatrons 
b)
electrons 
c)
neutrons 
d)
protons 
53.
An atoms overall charge is 
a)
positive 
b)
depends on its mood 
c)
neutral 
d)
negative 
54.
The smallest particle of any particular type of matter is known by which of the following terms?
a)
Compound
b)
Atom
c)
Chemical
d)
Element
55.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 

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