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Chem S2 U7 #2

Total questions: 57

Worksheet time: 2hrs 50mins

Name
Class
Date
1.
A helium nucleus with two protons and two neutrons is called a(n) ____.  
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
2.
Solve this equation for alpha decay.
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
3.

Gamma rays have

a)

no mass

b)

a huge mass

c)

a small mass

d)

an average mass

4.
Solve this equation for beta decay.
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
5.
Has the symbol
a)
Alpha
b)
Beta 
c)
Gamma
6.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
7.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
8.
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
9.

In a correctly written symbol what would be located in the "Z" position?

a)

number of neutrons

b)

atomic number

c)

number of electrons

d)

mass number

10.

What type of decay is shown here

23892U ---> 23490Th + 42He.

a)

alpha

b)

beta

c)

gamma

11.

Finish this equation

20983Bi--> _______ + 20581Tl

a)

42He

b)

0-1e

c)

y

12.

finish the equation


22688Ra --> ____ + 22688Ra

a)

42He

b)

0-1e

c)

y

13.

finish the equation


18173Ta --> ____ + 18174W

a)

42He

b)

0-1e

c)

y

14.
If we start off with element 5024X after an alpha decay we get another element Y that looks like
a)
5022Y
b)
 4622Y
c)
4820Y
d)
5426Y
15.
Negatively charged particles emitted from a nucleus at a high speed are ____.  
a)
alpha particle
b)
gamma rays
c)
beta particles
d)
X rays
16.

22286Rn —› ____ + 42He

a)

22589Ac

b)

21187Fr

c)

21885At

d)

21884Po

17.

24094Pu —› ____ + 42He

a)

23692U

b)

24796Cm

c)

24493Np

d)

24295Am

18.

13755Cs —› ____ + 0-1e

a)

17872Hf

b)

13753I

c)

14154Xe

d)

13756Ba

19.

3215P—› ____ + 0-1e

a)

3216S

b)

3214Si

c)

1632S

d)

3417Cl

20.

263104Rf —› ____ + 0-1e

a)

268105Db

b)

263105Db

c)

263106Sg

d)

263103Lr

21.

146C —› ____ + 0-1e

a)

126C

b)

147N

c)

148O

d)

145B

22.

18579Au —› ____ + 42He

a)

18580Hg

b)

18775Re

c)

18177Ir

d)

7934Se

23.

What change happens in the nucleus for this radioactive decay example?

a)

loses 2 protons + 2 neutrons

b)

neutron becomes a proton

c)

proton becomes a neutron

d)

no change to nucleus

24.

How many neutrons does an Uranium-236 atom have?

a)

236

b)

182

c)

144

d)

118

25.

If a Technetium-99 atom emits a beta particle, what is the new element produced?

a)

Rhodium

b)

Ruthenium

c)

Molybdenum

d)

Technetium

26.

How many protons are in a Carbon-11 atom?

a)

11

b)

8

c)

6

d)

5

27.

What type of nuclear decay is represented in this illustration?

a)

beta decay

b)

gamma radiation

c)

alpha decay

d)

nuclear fusion

28.

A neutron changes into a proton and an electron releasing this type of particle.

a)

alpha decay

b)

beta decay

c)

gamma decay

d)

all of the above

e)

alpha & beta decay

29.

The atomic number of Neptunium (Np) is (a)   .

30.

The mass number of Neptunium (Np) is (a)   .

31.

The atomic number of Actinium (Ac) is (a)   .

32.

Oxygen-19 produces ________________ through beta decay.

a)

nitrogen-19

b)

fluorine-19

c)

carbon-14

d)

lead-208

33.

a)
b)
c)
d)
e)
34.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

35.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
36.
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
37.
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
38.

What element does this Bohr model represent?

a)

Chromium

b)

Magnesium

c)

Carbon

d)

Krypton

39.

How many Valence electrons are there?

a)

4

b)

3

c)

2

d)

1

40.
What is the name of the pictured isotope?
a)
Copper-29
b)
Copper-63
c)
Copper-34
d)
CopperWopperHopperBopper
41.

12 protons and 13 neutrons

a)

Mg-12

b)

Mg-13

c)

Mg-25

d)

Mg-24.305

42.

Potassium-39 has how many neutrons?

a)

19

b)

18

c)

20

d)

21

43.

What family is highlighted in the picture?

a)

Alkali Metals

b)

Alkaline Earth Metals

c)

Halogens

d)

Noble Gases

44.
Which of the following is a halogen?
a)
Krypton
b)
Bromine
c)
Potassium
d)
Bismuth
45.

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

46.

What is the right part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

47.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

48.

Is the following equation balanced?

Al + O2 ---> 2Al2O3

a)

YES

b)

NO

49.

What is the number before a chemical formula called?

Example: 2H2 + O2 ---> 2H2O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

50.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

4

51.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
52.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
53.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
54.
What atom matches this electron configuration?
[Xe] 6s25d9
a)
Mercury
b)
Gold
c)
Platinum
d)
Thallium
55.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
56.
What is this element? 
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
57.

What is the shorthand configuration for Lead?

a)

[Xe]6s24f145d106p2

b)

[Xe]6s25d106p2

c)

[Rn]6s25d106p2

d)

[Rn]6s24f145d106p2

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