Atoms homework - math PDF

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Name_______________________________________________

Period_________

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

Positive 5. What type of charge does a neutron have?

Nuetral Electrons

6. What type of charge does an electron have?

Negetive 7. Which two subatomic particles are located in the nucleus of an atom?

Protons

Nuetrons

Protons and neutron

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

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

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

11 atomic mass units 11. How many protons are in the nucleus of an atom with an atomic number of 15?

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

0 electrons do not belong in the nuclecus 13. How many neutrons are in the nucleus of an atom with an atomic number of 25? (use Periodic Table for mass)

29 nuetrons 14. What is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons?

7 15. How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number of 25?

11 neutrons

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:

E E

N N E

E

E

N

P N

P

P P P P

Nucleus

E

N P N P

E

E

The Atoms Family Atomic Math Challenge Atomic number equals the number of

protons

electrons

__________ or __________ Atomic mass equals the number of

nuetrons protons __________ + __________

8

Atomic # = ______

15.999

Atomic Mass = __________

8

# of Protons = ________

7

# of Neutrons = ________

8

# of Electrons = ________

14

Atomic # = ______

28.086

Atomic Mass = __________

14

# of Protons = ________

14

# of Neutrons = ________

14

# of Electrons = ________

30

Atomic # = ______

65

Atomic Mass = __________

30

# of Protons = ________

35

# of Neutrons = ________

30

# of Electrons = ________

5

Atomic # = ______

10

Atomic Mass = __________

5

# of Protons = ________

5

# of Neutrons = ________

5

# of Electrons = ________

3

Atomic # = ______

6.941

Atomic Mass = __________

3

# of Protons = ________

3

# of Neutrons = ________

3

# of Electrons = ________

35

Atomic # = ______

79.904

Atomic Mass = __________

35

# of Protons = ________

44

# of Neutrons = ________

35

# of Electrons = ________

16

Atomic # = ______

32.06

Atomic Mass = __________

16

# of Protons = ________

16

# of Neutrons = ________

16

# of Electrons = ________

12

Atomic # = ______

24.305

Atomic Mass = __________

12

# of Protons = ________

12

# of Neutrons = ________

12

# of Electrons = ________

79

Atomic # = ______

196.967

Atomic Mass = __________

79

# of Protons = ________

117

# of Neutrons = ________

79

# of Electrons = ________

53

Atomic # = ______

126.905

Atomic Mass = __________

53

# of Protons = ________

76

# of Neutrons = ________

53

# of Electrons = ________

18

Atomic # = ______

39.948

Atomic Mass = __________

18

# of Protons = ________

21

# of Neutrons = ________

18

# of Electrons = ________

1

Atomic # = ______

1.008

Atomic Mass = __________

1

# of Protons = ________

0

# of Neutrons = ________

1

# of Electrons = ________

25

Atomic # = ______

54.938

Atomic Mass = __________

25

# of Protons = ________

29

# of Neutrons = ________

25

# of Electrons = ________

19

Atomic # = ______

39.098

Atomic Mass = __________

19

# of Protons = ________

20

# of Neutrons = ________

19

# of Electrons = ________

9

Atomic # = ______

18.998

Atomic Mass = __________

9

# of Protons = ________

9

# of Neutrons = ________

9

# of Electrons = ________...