Subatomic Particles Worksheet



Subatomic Particles Worksheet Name:__________________

Put the correct answer in the space provided (you will need a Periodic Table): (3 pts each)

1. What is the atomic number of oxygen (O)? _____

2. How many protons does an aluminum (Al) atom have? _____

3. How many electrons does a calcium (Ca) atom have? _____

For #4 - #6, consider a potassium (K) atom with a mass number of 41:

4. How many protons does this atom have? _____

5. How many electrons does this atom have? _____

6. How many neutrons does this atom have? _____

For #7 - #9, consider the atom with A = 95 and Z = 42:

7. How many neutrons does this atom have? _____

8. How many protons does this atom have? _____

9. What is the atomic symbol for this element? _____

For #10 - #12, consider the atom with 35 protons, 35 electrons, and 45 neutrons:

10. What is the atomic symbol for this element? _____

11. What is the atomic number of this atom? _____

12. What is the mass number of this atom? _____

For #13 - #15, consider a copper (Cu) atom with a mass number of 64:

13. What is the Z value for this atom? _____

14. What is the A value for this atom? _____

15. How many neutrons does this atom have? _____

For #16 - #18, consider the following symbol ( 14C

16. How many protons does this atom have? _____

17. How many electrons does this atom have? _____

18. How many neutrons does this atom have? _____

For #19 - #21, consider the iron (Fe) ion with an overall +3 charge and A = 56:

19. How many protons does this ion have? _____

20. How many electrons does this ion have? _____

21. How many neutrons does this ion have? _____

For #22 - #24, consider the iodine (I) ion with an overall –1 charge and A = 126:

22. How many protons does this ion have? _____

23. How many electrons does this ion have? _____

24. How many neutrons does this ion have? _____

For #25 - #26, consider an ion with 50 protons, 46 electrons, and 70 neutrons:

25. What is the charge on this ion? _____

26. What is the mass number of this ion? _____

For #26 - #27, consider an ion with 25 protons, 20 electrons, and 30 neutrons:

27. What is the charge on this ion? _____

28. What is the atomic symbol of this ion? _____

For #28 - #30, consider the following symbol ( 238U+3

29. How many protons does this ion have? _____

30. How many electrons does this ion have? _____

31. How many neutrons does this ion have? _____

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