WK Number 2 Atomic Structure Chemistry 1 Worksheet Assignment with answers PDF

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Chemistry 1 worksheet atomic structure with answers. Official title is WK#2 Atomic Structure. Answers are in red....

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Zaria Elliott Name_______________________________________________

3rd Period_________

Atomic Structure Worksheet Label the parts of an atom on the diagram below. 4. What type of charge does a proton have?

Positive (+1) 5. What type of charge does a neutron have?

Neutral (0)

Electron

6. What type of charge does an electron have?

Negative (-1) 7. Which two subatomic particles are located in the nucleus of an atom?

Neutron

Proton

Protons and neutrons

8. If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the nucleus?

35

9. What is the atomic number of the atom in the diagram above?

5 10. What is the atomic mass/mass number of the atom in the diagram above?

(11+11=22) *protons and neutrons added together) 22 is the atomic mass/mass number 11. How many protons are in the nucleus of an atom with an atomic number of 15?

15 *number of protons is the same as the atomic number 12. How many electrons are in the nucleus of an atom with an atomic number of 20?

20 13. How many neutrons are in the nucleus of an atom with an atomic number of 25? (use Periodic Table for mass)

30 Neutrons. atomic mass: 54.938 ~ 55 atomic number: 25.....55-25=30 14. What is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons?

Mass number= 6.94. (Li-Lithium has an atomic number of 3 which means it has 3 protons. 15. How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number of 25?

Neutrons= 11 (atomic mass: 36 - 25 :atomic number)

Bohr Model Drawing (25 points) Draw a Bohr model of an oxygen atom in the space below. Be sure to place the electrons in the correct orbitals and to fill out the key for the subatomic particles. Key Protons: Neutrons: Electrons:

8 (Same as atomic number) 8 (Atomic mass#:16-8:Atomic#) 8 (Same as protons)

Nucleus

The Atoms Family Atomic Math Challenge Atomic Number

Atomic number equals the number of

Element symbol

electrons protons __________ or __________

Element name

Atomic mass equals the number of

Atomic mass number

neutrons protons __________ + __________

Zn Lithium

Oxygen

8

30

Atomic # = ______

3 Atomic # = ______

65 Atomic Mass = __________

7 Atomic Mass = __________

30 # of Protons = ________

# of Protons = ________

# of Neutrons = ________

35 # of Neutrons = ________

# of Neutrons = ________

8 # of Electrons = ________

30 # of Electrons = ________

3 # of Electrons = ________

Atomic # = ______

16 Atomic Mass = __________ 8 # of Protons = ________

8

3

4

Br

Si Boron

5 Atomic # = ______

35 Atomic # = ______

11 Atomic Mass = __________

80 Atomic Mass = __________

14 # of Protons = ________

5 # of Protons = ________

# of Protons = ________

14 # of Neutrons = ________

# of Neutrons = ________

45 # of Neutrons = ________

14 # of Electrons = ________

5 # of Electrons = ________

35 # of Electrons = ________

14 Atomic # = ______ 28 Atomic Mass = __________

6

35

I Manganese

Sulfur

16 Atomic # = ______ 32 Atomic Mass = __________

53 Atomic # = ______ 127

25 Atomic # = ______ 55

Atomic Mass = __________

Atomic Mass = __________

16 # of Protons = ________

53 # of Protons = ________

# of Protons = ________

16 # of Neutrons = ________

74 # of Neutrons = ________

# of Neutrons = ________

16 # of Electrons = ________

# of Electrons = ________

53

25

30

25

# of Electrons = ________

Ar

Potassium

Magnesium

12

Atomic # = ______

24

Atomic Mass = __________

18

Atomic # = ______

19 Atomic # = ______

40 Atomic Mass = __________

Atomic Mass = __________

18

29

# of Protons = ________

19 # of Protons = ________

# of Neutrons = ________

22 # of Neutrons = ________

# of Neutrons = ________

12 # of Electrons = ________

# of Electrons = ________

12 # of Protons = ________ 12

18

Au

20

19 # of Electrons = ________

F Hydrogen

79

Atomic # = ______

197

Atomic Mass = __________

9

1 Atomic # = ______

Atomic # = ______

1 Atomic Mass = __________

Atomic Mass = __________

1

79 # of Protons = ________

# of Protons = ________

118 # of Neutrons = ________

# of Neutrons = ________

79 # of Electrons = ________

# of Electrons = ________

0 1

19

9 # of Protons = ________ 10

# of Neutrons = ________

9 # of Electrons = ________...