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Atomic structure DZ 21

Total questions: 50

Worksheet time: 50mins

Name
Class
Date
1.
a)
Nucleus, positive
b)
Nucleus, negative
c)
Nucleus, neutral
d)
Electron Cloud, positive
2.
a)
Nucleus, positive
b)
Nucleus, negative
c)
Nucleus, neutral
d)
Electron Cloud, positive
3.
a)
Electron Cloud, positive
b)
Nucleus, negative
c)
Electron Cloud, negative
d)
Electron Cloud, neutral
4.
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons only
5.
a)
Protons
b)
Neutrons
c)
Electrons
6.
Because it contains...
a)
Protons
b)
Electrons
c)
Neutrons
7.
a)
Protons and Neutrons
b)
Neutrons and Electrons
c)
Protons and Electrons
8.
a)
Protons and Neutrons
b)
Neutrons and Electrons
c)
Protons and Electrons
9.
a)
Number of Protons
b)
Number of Electrons
c)
Number of Neutons
d)
Number of Protons and Neutrons
10.
a)
Number of Protons
b)
Number of Electrons
c)
Number of Neutons
d)
Number of Protons and Neutrons
11.
a)
Protons + Electrons
b)
Atomic Number - Mass
c)
Mass - Atomic Number 
12.
An electron has a _____ charge.
a)
negative
b)
positive
c)
neutral
13.
The mass of one proton is greater than the mass of one...
a)
neutron
b)
electron
14.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
15.
How many electrons does an atom with 8 protons have?
a)
8
b)
16
c)
15.99
d)
24
16.
Which of the following elements has 18 electrons?
a)
Flourine
b)
Helium
c)
Argon
d)
Chlorine
17.
The subatomic particles in green are...
a)
Protons
b)
Neutrons
c)
Electrons
18.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
19.
The following element key shows how many protons?
a)
16
b)
15.999
c)
Oxygen
d)
8
20.
How many protons are in Boron (B) ?
a)
3
b)
5
c)
10
d)
11
21.
How many protons are in Zirconium (Zr) ?
a)
40
b)
91
c)
30
d)
65
22.
Which element has 31 protons ?
a)
Gallium 
b)
Germanium
c)
Gadolinium
d)
Polonium
23.
Which element has 73 protons ?
a)
Titanium
b)
Tantulum
c)
Thallium
d)
Thorium
24.
Which element has 5 more protons than Oxygen (O)?
a)
Aluminum
b)
Lithium
c)
Chlorine
d)
Silicon
25.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
26.
What is the charge of the neutron?
a)
Negative
b)
Positive
c)
electrical charge
d)
Neutral (no charge)
27.
What is the formula to solve for the neutron?
a)
Mass + Atomic Number= Neutrons
b)
Mass x Atomic Number = Neutrons
c)
Mass - Atomic Number = Neutrons
d)
Mass + Number of Protons = Neutron
28.
How many neutrons does the an element with an atomic number of 3 and a mass of 6.9 contain?
a)
6.9
b)
4
c)
3
d)
7
29.
An atom with 19 protons, and 19 electrons and a mass of 39 has how many neutrons?
a)
19
b)
39
c)
20
d)
58
30.
The mass of one proton is equal to the mass of one...
a)
neutron
b)
electron
31.
Which is a neutron?
a)
A
b)
B
c)
C
32.
How many neutrons does NA have?
a)
11
b)
23
c)
22
d)
12
33.
How many atoms of carbon (C) are in  C6H12O6?
a)
3
b)
6
c)
12
d)
24
34.
Element or compound?
H2O
a)
element
b)
compound
35.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
36.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
37.
Which of the following models best demonstrates a balanced chemical equation?
a)
F
b)
G
c)
H
d)
J
38.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
39.

Why must chemical equations be balanced?

a)

So that the equation doesn't explode

b)

The reaction won't happen until it is balanced

c)

Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

d)

Based on the Law of Conservation of Energy, energy cannot be created or destroyed.e

40.

Which of the following is not a chemical reaction?

a)

Souring of milk

b)

Dissolution of sugar in water

c)

Rusting of iron

d)

Digestion of food in our body

41.

Examine the following chemical reaction:

H20 + CO2 → C6H12O6 + O2


What are the reactants?

a)

H20 + CO2

b)

C6H12O6 + O2

c)

→

d)

H20 + CO2→ C6H12O6 + O2

42.

Examine the following chemical reaction:

H2O2 → H2O + O2


What are the products

a)

H2O2

b)

H2O + O2

c)

H2O2→H2O + O2

43.

Which two elements on the periodic table are in the same group?

a)

Na and He

b)

O and C

c)

Li and Ne

d)

He and Ar

44.

How many valence electrons are in an element in group 15 in the periodic table?

a)

5

b)

15

c)

7

d)

8

45.
Each row in the periodic table is called a 
a)
group
b)
period
c)
cluster
d)
unit
46.
Each column in the periodic table is called a 
a)
period
b)
group
c)
cluster
d)
unit
47.
most of the elements on the periodic table are 
a)
non metals 
b)
metals 
c)
metalloids 
d)
none 
48.

How many periods are on the Periodic Table?

a)

6

b)

7

c)

8

d)

9

49.

Elements in the same period/row have the same--

a)

# of valence electrons

b)

# of protons

c)

# of energy shells

d)

# of neutrons

50.

Which element is NOT in Period 3 on the Periodic Table?

a)

Na

b)

Ar

c)

P

d)

Ne

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