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Atoms Quiz 1

Total questions: 54

Worksheet time: 44mins

Name
Class
Date
1.
How do you find out the number of protons in an atom?
a)
atomic number
b)
atomic mass
c)
charge
d)
atomic mass - atomic number
2.
How do you find out the number of neutrons in an atom?
a)
atomic number
b)
atomic mass
c)
charge
d)
atomic mass - atomic number
3.
The mass of a proton is _______.
a)
1 amu
b)
1 gram
c)
has no mass
d)
undetermined
4.
The part of the atom that determines the identity of the atom is the ____________.
a)
proton
b)
nucleus
c)
electron
d)
neutron
5.
Which item on this element square represents the atomic number?
a)
13
b)
Al
c)
Aluminum
d)
26.981538
6.
How many neutrons are in the atom "K"?
a)
7
b)
19
c)
39
d)
20
7.
How many protons does an atom of Carbon have? 
a)
3
b)
12.011
c)
6
d)
none
8.
Which is an electron?
a)
A
b)
B
c)
C
9.

Which part of an atom has the smallest mass?

a)

Proton

b)

Neutron

c)

Electron

d)

They are all the same

10.

Using the picture from a periodic table, what is the Atomic Number?

a)

26

b)

Fe

c)

55.845

d)

56

11.

Calcium has the atomic number 20. If it has a mass number of 46, how many neutrons are present?

a)

46

b)

20

c)

26

d)

We cannot tell

12.

What is the mass number of bromine?

a)

35

b)

45

c)

80

d)

79.904

13.

What is the atomic number of this element?

a)

12

b)

24

c)

23

14.
An atom has an atomic number of 30 and a mass number of 65. How many neutrons are in the atom?
a)
30
b)
65
c)
35
d)
95
15.
What is the Atomic mass?
a)
Atomic Mass = A
b)
Atomic Mass = B
c)
Atomic Mass = C
d)
Atomic Mass = D
16.

Where is nearly all the the mass in an atom located?

a)

only protons have mass

b)

only Neutrons have mass

c)

the nucleus

d)

the electron cloud

17.
An atom M has 20 protons, 18 electrons and 20 neutrons. Calculate its mass number
a)
36
b)
40
c)
38
d)
42
18.
What is true about a neutral atom?
a)
The number of protons equal the number of neutrons
b)
The number of protons equal the number of electrons
c)
The number of neutrons equal the number of electrons
d)
The number of protons, neutrons, and electrons are all different
19.

Match the scientist to their model.

a)

1.

Bohr

b)

2.

Rutherford

c)

3.

Schrodinger

d)

4.

JJ Thomson

20.

Match the scientist to their model.

a)

Electrons occupy only certain orbits. & Each orbit has an energy associated with it.

1.

Bohr

b)

Gold Foil Experiment & Evidence of the Nucleus

2.

Rutherford

c)

Cathode ray Experiment & The Plum Pudding Model

3.

J.J. Thomson

d)

Atoms of a given element are identical. & Atoms of different elements combine to form chemical compounds.

4.

Dalton

e)

Mechanical wave model also known as the Quantum Mechanical Model & Electron orbitals are nothing like orbits.

5.

Schrodinger

21.

Label the subatomic particle locations.

a)

protons

b)

neutrons

c)

electrons

1
2
3
1)
2)
3)
22.

What is the mass number of a nitrogen atom that has 8 neutrons?

a)

15

b)

14

c)

22

d)

8

23.

What is the mass number of a calcium atom that has 21 neutrons?

a)

20

b)

21

c)

41

d)

40

24.

How do you calculate mass number?

a)

Mass x percent

b)

Protons + Electrons

c)

Protons + Neutrons

d)

Neutrons + Protons + Electrons

25.

A phosphorus atom has 51 protons and 71 neutrons. What is the mass number?

(a)  

26.

Determine the "Mass Number" for the following atom: Protons: 10; Neutrons: 12; Electrons: 10

(a)  

27.

Please Label the Element Information from the Periodic Table of Elements.

a)

Chemical Name

b)

Chemical Symbol

c)

Atomic Mass

d)

Atomic Number

1
2
3
4
1)
2)
3)
4)
28.

Label the diagram of the atom.

a)

Nucleus

b)

Electron Cloud

c)

Electron

d)

Neutron

e)

Proton

f)

Valence Electron

1
2
3
4
5
6
1)
2)
3)
4)
5)
6)
29.

This isotope of Titanium has:

​ (a)   protons

22 electrons

​ (b)   neutrons

mass number of ​ (c)  

Choose from the below words
22
26
48
70
47
21
30.

Atoms are made up of ________________

a)

energy

b)

electrons

c)

subatomic particles

d)

gasses

31.
The positively charged particles of an atom are the ________.
a)
electrons
b)
protons
c)
neutrons
d)
protons & neutrons
32.

Determine the mass number:

(a)  

33.
which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
34.
What is an isotope? 
a)
A charged atom
b)
An atom with different amounts of neutrons
c)
An atom with different amounts of protons
d)
A neutral atom
35.

When two atoms of the same element have different masses, they are called ______, and have a different number of ______.

(a)   ​ (b)  

Choose from the below words
Isotopes
neutron
proton
36.
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
a)
74.92 amu
b)
24.97 amu
c)
75.01 amu
d)
74.51 amu
37.
4.35% of all X atoms have a mass of 39.946 amu. 83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of 43.939 amu. What is the average atomic mass of atom X?
a)
41.97 amu
b)
42.19 amu
c)
10.43 amu
d)
40.04 amu
38.
An isotope has three forms.  30% have a mass of 4 amu, 20% have a mass of 5 amu and 50% have a mass of 3 amu.  Average atomic mass will be closest to
a)
2 amu
b)
3 amu
c)
4 amu
d)
5 amu
39.

Who developed this early atomic theory?

All atomic structure was made up of atoms which he believed to be tiny, hard spheres.

a)

Bohr

b)

Dalton

c)

Rutherford

d)

J.J. Thomson

e)

Democritus

40.
If you want to know which atom an element is, then count the _____
a)
protons
b)
neutrons
c)
electrons
d)
nucleons
41.

How many electrons does silicon have?

a)

28

b)

14

c)

0

d)

10

42.

The atomic number is always the number of

a)

protons

b)

neutrons

c)

electrons

43.
 12. The table provides information on four different elements. Which element has six protons in its nucleus?
a)
A. Boron
b)
B. Carbon
c)
C. Nitrogen
d)
D. Oxygen
44.

The atomic number of magnesium is 12. The atomic mass is 24. How many protons does a magnesium atom have? [Type your answer]

(a)  

45.

For Fluorine, the atomic number is nine. The mass number is 19. How many neutrons in one atom of Fluorine?

a)

9

b)

7

c)

19

d)

10

46.

Which Bohr model represents Neon?

a)
b)
c)
d)
47.

Which of the following is the Bohr Model of Hydrogen?

a)

b)

c)

d)

e)

None of the Above

48.

Which of the following is the Bohr Model of Lithium?

a)

b)

c)

d)

e)

None of the Above

49.

Which of the following is the Bohr Model of Sodium?

a)

b)

c)

d)

e)

None of the Above

50.

Which of the following is the Bohr Model of Potassium?

a)

b)

c)

d)

e)

None of the Above

51.

Which of the following is the Bohr Model of Magnesium?

a)

b)

c)

d)

52.

Which of the following is the Bohr Model of Fluorine?

a)

b)

c)

d)

53.

Which of the following is the Bohr Model of Aluminum?

a)

b)

c)

d)

54.

Which of the following is the Bohr Model of Carbon?

a)

b)

c)

d)

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