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Ch4 Atomic Structure

Total questions: 51

Worksheet time: 47mins

Name
Class
Date
1.

What is A symbol?

a)

Nuclear symbol

b)

Symbol of element

c)

Mass number

d)

Atomic number

2.

What is Z symbol?

a)

Nuclear symbol

b)

Symbol of element

c)

Mass number

d)

Atomic number

3.

What is X symbol?

a)

Nuclear symbol

b)

Symbol of element

c)

Mass number

d)

Atomic number

4.

What is the number 9?

a)

Nuclear symbol

b)

Symbol of element

c)

Mass number

d)

Atomic number

5.

What is the neutron number?

a)

15

b)

16

c)

30.974

d)

31

6.

What is the electron number?

a)

11

b)

22.990

c)

22

d)

12

7.

What is the proton number?

a)

11

b)

22.990

c)

22

d)

12

8.

How many protons does this isotope of titanium have?

a)

48

b)

22

c)

26

d)

70

9.

How many protons are in the nucleus of the element shown?

a)

19

b)

9

c)

10

d)

28

10.

How many neutrons does this isotope of titanium have?

a)

48

b)

22

c)

26

d)

70

11.
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
12.

How many neutrons does an Oxygen-19 isotope have?

a)

19

b)

8

c)

11

d)

10

13.
How many neutrons does a Carbon 13 atom have?
a)
6
b)
5
c)
7
d)
8
14.
What is the name of the pictured isotope?
a)
Chlorine-Schmorine
b)
Chlorine-17
c)
Chlorine-35
d)
Chlorine-18
15.
What is the name of the pictured isotope?
a)
Copper-29
b)
Copper-63
c)
Copper-34
d)
CopperWopperHopperBopper
16.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
17.
What quantities vary between isotopes of an element?
a)
protons, electrons, and atomic mass
b)
protons, electrons, and atomic number
c)
neutrons and electrons
d)
neutrons and atomic mass
18.
Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.
a)
n0 ;  atomic #’s
b)
p+ ; atomic #’s
c)
e- ; atomic masses
d)
n0 ; atomic masses
19.

If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element? I. 7735X  II. 7733X  III. 8137X  IV. 8135 X

a)
I and II
b)
III and IV
c)
I and IV
d)
I and III
20.
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208.  The average atomic mass of lead is 207.2.  Which isotope of lead is likely to be the most abundant.
a)
204
b)
206
c)
207
d)
208
21.
An atom is electrically neutral when
a)
protons and neutrons are the same
b)
protons and electrons are the same
c)
neutrons and electrons are the same
d)
neutrons balance the protons and electrons
22.

76 protons and 114 neutrons

a)

Osmium-114

b)

Osmium-76

c)

Osmium-190

d)

Osmium-190.23

23.

The number equal to the number of protons in the nucleus is the

a)

mass number

b)

average atomic mass

c)

atomic number

24.
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
a)
9.012, Beryllium
b)
12.011, Carbon
c)
6.941, Lithium
d)
10.812, Boron
25.

To calculate average atomic mass, you need

a)

the atomic mass of each isotope

b)

the percent abundance of each isotope

c)

the atomic mass and percent abundance of each isotope

d)

to find the average of the atomic masses of each isotope

26.

Chlorine has two naturally occurring isotopes, Cl-35 and Cl-37, The atomic mass of chlorine is 35.45. Which of these two isotopes of chlorine is more abundant?

a)

Cl-35

b)

Cl-37

c)

Cannot be determined from the information provided.

27.

Element Z has 2 natural isotopes. One isotope has a mass of 15.0 amu and a relative abundance of 30%. The other isotope has a mass of 16.0 amu and a relative abundance of 70%. Estimate the average atomic mass for this one element.

a)

15.0 amu

b)

16.0 amu

c)

15.7 amu

d)

16.9 amu

28.

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

29.

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

30.

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

a)

neutron

b)

proton

c)

electron

d)

electron cloud

31.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
32.
Barium atoms want to form...
a)
an anion
b)
a cation
c)
an onion
d)
a cuddly kitten friend
33.
An Arsenic atom wants to form...
a)
An anion
b)
A cation
c)
An onion
d)
A cuddly kitten friend
34.
Cations are...
a)
Positive
b)
Negative
c)
Neutral
d)
Purring
35.
Anions are...
a)
Positive
b)
Negative
c)
Neutral
d)
Crying
36.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
37.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
38.
Which particles change the charge in atoms when ions are formed?
a)
Protons
b)
Electrons
c)
Neutrons
d)
Kittens
39.
What is the ionic symbol for a Gallium atom?
a)
Ga+3
b)
Ga-3
c)
Ga+2
d)
Ga-2
40.
What charge will an Oxygen ion have? 
a)
+1
b)
-1
c)
+2
d)
-2
41.
Group 17 always has ions with a charge of 
a)
+1
b)
+2
c)
-1
d)
-2
42.
charge of lithium ion
a)
-2
b)
-1
c)
+1
d)
+2
43.

•What elementary particles are the building blocks for protons and neutrons?

a)

•Quarks

b)

• Leptons

c)

• Photons

d)

• Gluons

44.

•How many quarks make up a proton?

a)

0

b)

1

c)

2

d)

3

e)

4

45.

23592X\frac{235}{92}X  What is element X

a)

Nobium

b)

Uranium

46.
which explanation of this notation is correct?
a)
 12 is proton #
b)
6 tells you there are 6 neutrons
c)
6 tells you there are 6 protons
d)
12 is not a mass # here
47.
How many protons does He have?
a)
4
b)
2
c)
6
d)
0
48.

An atom has 12 protons and 13 neutrons in its nucleus. Which is the correct symbol?

a)
b)
c)
d)
49.

12 protons, 10 electrons, 12 neutrons

a)

24Mg−2^{24}Mg^{-2}

b)

24Cr+2^{24}Cr^{+2}

c)

24Cr−2^{24}Cr^{-2}

d)

24Mg+2^{24}Mg^{+2}

50.

26Al−3^{26}Al^{-3}  

a)

13 protons, 16 electrons, 13 neutrons

b)

12 protons, 15 electrons, 14 neutrons

c)

16 protons, 13 electrons, 13 neutrons

51.

What does the mass number of an element represent?

a)

The number of protons in an atom

b)

the number of neutrons in an atom

c)

the number of electrons in an atom

d)

the number of protons and neutrons in an atom

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