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Worksheets

Semester 1 review 2024

Total questions: 100

Worksheet time: 4hrs 50mins

Name
Class
Date
1.

Which subatomic particle has a positive charge?

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

2.

Which subatomic particle has a negative charge?

a)
neutrons
b)

electrons

c)
protons
d)
isotopes
3.

Which of the following represents protons on the periodic table?

a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
4.

Which subatomic particle has no charge or is neutral?

a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
5.
True or False - Protons and Neutrons have about the same mass.
a)
True - They have about the same mass
b)
False - They do not have about the same mass
6.
How many protons does this atom have?
a)
3
b)
6
c)
4
d)
2
7.

In a neutral atom,

a)

protons = electrons

b)

protons = neutrons

c)

neutrons = electrons

d)

protons = neutrons = electrons

8.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
9.
What is the atomic number of this atom?
a)
1
b)
3
c)
4
d)
7
10.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

11.
How is the number of neutrons in the nucleus of an atom calculated?
a)
Add the number of e- and p+ together
b)
Subtract the number of e- from p+
c)

Subtract the number of the atomic number from the mass number

d)
Add the mass number to the number of e-
12.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
13.
How many protons does this atom have?
a)
2.5
b)
6
c)
5
d)
10.811
14.

Which would you do to change this Lithium to a new element?

a)

Add a neutron

b)

Add an electron

c)

Add a proton

d)

Add a proton and neutron\

15.

Which atom will have a +1 charge?

a)

3 protons

4 neutrons

3 electrons

b)

3 protons

4 neutrons

4 electrons

c)

3 protons

4 neutrons

2 electrons

d)

3 protons

3 neutrons

3 electrons

16.

Atoms of the same element with a different number of neutrons

a)

Ion

b)

alloy

c)

Isotope

d)

Quarks

17.
A charged atom
a)
Ion
b)
Isotope
c)
Electron Cloud
d)
Quark
18.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
19.
Atoms of the same element must always have the same number of _________
a)
electrons
b)
neutrons
c)
isotopes
d)
protons
20.
The _________ of an element equals the number of protons in an atom of that element
a)
mass number
b)
atomic weight
c)
atomic number
d)
isotopes
21.

Which element is represented by the image?

a)

Boron

b)

Carbon

c)

Nitrogen

d)

Oxygen

22.

What charge does an ion have when it GAINS electrons?

a)

positive

b)

negative

c)

no charge

d)

it varies

23.

What differs between an atom and an ion of the same element?

a)

the number of protons

b)

the number of neutrons

c)

the number of electrons

24.

What is the charge on a lithium atom that loses 1 electron?

a)

neutral

b)

1+

c)

1-

25.
an atom with atomic number 6 would have how many protons 
a)
6
b)
12
c)
3
d)
cannot be determined 
26.
How many neutrons in C-14?
a)
6
b)
7
c)
14
d)
8
27.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
28.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons 
d)
mass number
29.

When you two atoms with different masses, Carbon-12 and Carbon-13 for example, what type of atom do you have?

a)

Neutral atom

b)

Ion

c)

Isotope

30.
Where are the Electrons found in the structure of an atom?
a)
In the nucleus
b)
In spaces around the nucleus
31.

What does the 6 represent?

a)

Atomic mass

b)

atomic number

c)

chemical symbol

d)

element name

32.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
33.
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
a)
12 neutrons
b)
12 electrons
c)
12 protons
d)
24 protons and neutrons
34.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

35

d)

25

35.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

10

36.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
37.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
a)
11
b)
5
c)
6
d)
16
38.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
39.
How many electrons does Sodium have?
a)
11
b)
23
c)
12
40.
How many neutrons does Fluorine have?
a)
9
b)
19
c)
10
41.

An atom has 25 protons and 30 neutrons. How many electrons are needed to make the atom neutral?

a)

0

b)

25

c)

30

d)

35

42.

A neutral atom of chlorine-35 can be described as the following EXCEPT

a)

contains 17 protons

b)

contains 35 electrons

c)

contains 18 neutrons

d)

has a mass of 35 amu

43.

An element with 11 protons, 11 electrons, and 12 neutrons is identified as

a)

sodium - 11

b)

magnesium - 12

c)

sodium - 23

d)

magnesium - 34

44.

What is the identity of the atom?

a)

Aluminum

b)

Silicon

c)

Cobalt

d)

Zirconium

45.

Which is the best nuclear symbol for a potassium atom with 21 neutrons?

a)
b)
c)
d)
46.

Which of the following is the nuclear symbol for lithium-6

a)
b)
c)
d)
47.

The hyphen notation of an atom of calcium with 20 protons, 20 electrons, and 22 neutrons is

a)

calcium - 20

b)

calcium - 40

c)

calcium - 62

d)

calcium - 42

48.

The number 84 in strontium - 84 represents

a)

the atomic number

b)

the mass number

c)

the average atomic mass

d)

the number of electrons

49.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

50.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

51.

Bromine-80 has how many neutrons?

a)

41

b)

42

c)

44

d)

45

52.

76 protons and 114 neutrons

a)

Osmium-114

b)

Osmium-76

c)

Osmium-190

d)

Osmium-190.23

53.

9 protons and 9 neutrons

a)

Fluorine-18

b)

Fluorine-9

c)

Fluorine-16

d)

Fluorine-18.998

54.

How many protons are in this isotope?

a)

9

b)

21

c)

12

55.

If a proton is added or removed from an atom, what happens?

a)

It becomes a different element.

b)

It becomes a different isotope.

c)

Nothing happens.

56.

What is the difference between Neon-20 and Neon-22?

a)

They have different numbers of electrons.

b)

They have different numbers of neutrons.

c)

Only 1 is radioactive.

d)

No difference.

57.

If an atom loses electrons, the charge will be positive.

a)

true

b)

false

58.

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

a)

Br-1

b)

Br+1

c)

Br+7

d)

Br-7

59.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
60.

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

a)

+2

b)

-2

c)

+3

d)

0

61.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
62.
An atom becomes _______ when it loses electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
63.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
64.

Is this atom neutral, or is it an ion?

a)

Neutral

b)

Ion

65.

Is this atom neutral or is it an ion?

a)

Neutral

b)

Ion

66.

What is the mass of this atom?

a)

12

b)

24

67.

How many neutrons are in this atom?

a)

12

b)

24

68.

How many electrons are in this atom?

a)

10

b)

12

c)

24

69.

Is this atom neutral, or is it an ion?

a)

Neutral

b)

Ion

70.

How many neutrons are in this atom?

a)

13

b)

14

c)

27

71.

1,221 km = ________ m

a)

1,221 m

b)

1,221,000 m

c)

1.221 m

d)

12,210 m

72.

435 mL = _____ cL

a)

4350 cL

b)

43.5 cL

c)

4.35 cL

d)

0.435 cL

73.

29 mm = ______ m

a)

0.029 m

b)

290 m

c)

0.29 m

d)

0.0029 m

74.

117 cm = _____ dm

a)

1.17 dm

b)

0.117 dm

c)

1170 dm

d)

11.7 dm

75.

35,400 mg = ________g

a)

3.5400 g

b)

3,540 g

c)

35.4 g

d)

354,000 g

76.

0.563 L = _____ mL

a)

5,630 mL

b)

5.63 mL

c)

56.3 mL

d)

563 mL

77.

2319 kL = _______ mL

a)

2,319,000 mL

b)

2,319,000,000 mL

c)

2.319 mL

d)

0.0002319 mL

78.

34 m = _____ mm

a)

340 mm

b)

3400 mm

c)

0.034 mm

d)

34,000 mm

79.

The base unit for volume is the ______?

a)

milliliter

b)

centiliter

c)

deciliter

d)

liter

80.

1 mL = _____L

a)

0.001 L

b)

0.1 L

c)

0.01 L

d)

1000 L

81.

To convert from the base unit to milli you multiply by how many factors of ten?

a)

1

b)

2

c)

3

d)

0

82.

1 mL = _____L

a)

0.001 L

b)

0.1 L

c)

0.01 L

d)

1000 L

83.

987 mm = _____ cm

a)

98.7 cm

b)

9,870 cm

c)

9.87 cm

d)

0.987 cm

84.
How would you write 564,000,000 in scientific notation?
a)
5.64 x 10-7
b)
5.64 x 106
c)
5.64 x 108
d)
56.4 x 107
85.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
86.
How do you write
8.317 x 106
in standard form?
a)
8, 371, 000
b)
83, 170, 000
c)
837, 100
d)
8, 317, 000
87.
Convert to scientific notation:
520,000,000  
a)
52 x 107
b)
5.2 x 107
c)
5.2 x 108
d)
0.52 x 109
88.
UNDERSTANDING
If the exponent is a positive number...
a)
you will get a large number
b)
you will get a smaller number
89.
UNDERSTANDING
If the exponent is a negative number...
a)
you will get a large number
b)
you will get a small number
90.

1.49×10−71.49×10^{-7}  

a)

0.0000000149

b)

0.00000149

c)

0.000000149

d)

14,900,000

91.

0.000295

a)

2.95×10−42.95\times10^{-4}

b)

2.95×1042.95\times10^4

c)

2.95×1052.95\times10^5

d)

2.95×10−52.95\times10^{-5}

92.

How would you write 0.0005 in scientific notation?

a)

50 x 105

b)

5 x 10-4

c)

5 x 10-3

d)

.5 x 103

93.

Which of the following numbers is written in scientific notation?

a)

20.35 x 104

b)

.2035 x 104

c)

2035 4

d)

2.035 x104

94.

How would you write 4.3756 x 104 in standard form?

(a)  

95.

Convert this number to standard notation:


1.4 x 10-2

(a)  

96.

Convert this value 8.317 x 106 into standard form?

(a)  

97.
Write in scientific notation:
0.00071363
a)

7.1363 x 10-3

b)

7.1363 x 10-4

c)

7.1363 x 104

d)

7.1363 x 103

98.

Convert to scientific notation:


520,000,000

a)

52 x 107

b)

5.2 x 10-7

c)

5.2 x 108

d)

0.52 x 109

99.

Convert to scientific notation:


.000457

a)

457 x 106

b)

457 x 10-6

c)

4.57 x104

d)

4.57 x 10-4

100.

Convert this number into scientific notation:


950,000

a)

9.5 x 105

b)

9.5 x 10-9

c)

9.5 x 102

d)

None of the above

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