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Unit 1

Total questions: 22

Worksheet time: 47mins

Name
Class
Date
1.

This model added on to previous models by showing electrons existed at certain "energy levels". It is often called the Planetary Model.

a)
The "Bohr Model" of the atom
b)
The "Rutherford Model" of the atom
c)
The "Plumb Pudding Model" of the atom
d)
The "Quantum Mechanical Model" of the atom
2.

How many protons are in Sodium?

a)

11

b)

22

c)

12

d)

33

3.

The neutrally charged particle (no charge) inside the nucleus is called a(n)

a)

proton

b)

neutron

c)

electron

d)

nucleus

4.

The nucleus is made up of

a)

Protons and neutrons

b)

protons and electrons

c)

electrons and neutrons

d)

neutrons

5.

A proton is described as

a)

a positively charged particle in the nucleus

b)

a positively charged particle in the rings of an atom

c)

a neutrally charge particle in the nucleus

d)

a negatively charge particle in the nucleus

6.
which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
7.
How many neutrons does a Sodium 24 isotope have?
a)
12
b)
13
c)
14
d)
15
8.
What is the atomic number of this atom?
a)
4
b)
5
c)
9
d)
none of the above
9.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

10.
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
11.
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
12.
Calcium has three different isotopes. One has a mass of 35.00 amu; another has a mass of 41.00 amu; and another has a mass of 40.00 amu. Which isotope is the most abundant of the three?
a)
40.00 amu
b)
41.00 amu
c)
35.00 amu
d)
impossible to tell
13.
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
14.

_____is the joining of atomic nuclei

a)

Fusion

b)

chain reaction

c)

Photosynthesis

d)

Fission

15.

Which process occurs naturally in the centre of stars like the Sun

a)

Bi-multiple reaction

b)

Fission

c)

chemical

d)

fusion

16.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
17.

Valence electrons are located...

a)

inside the nucleus

b)

in outer space

c)

on the outermost orbit of an atom

18.

Which element is part of the d block?

a)

C

b)

Na

c)

Fe

d)

Lu

19.

Which element is part of the p block?

a)

C

b)

Na

c)

Fe

d)

Lu

20.

Which element is part of the s block?

a)

C

b)

Na

c)

Fe

d)

Lu

21.

What atom matches this electron configuration?

1s22s22p63s23p64s23d10

a)

Zinc

b)

Copper

c)

Nickel

d)

Germanium

22.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6

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