1. Modified by M. Sparks 2015

2. Atomic Structure Atomic Mass/Number Ions/Charges of Molecules Isotopes/Perc ent Abundance 10 20 30 40 50

3. Question 1 - 10 The subatomic particle discovered when Rutherford experimented with bombarding gold foil with positively charged alpha particles. The subatomic particle discovered when Rutherford experimented with bombarding gold foil with positively charged alpha particles.

4. Answer 1 – 10 Nucleus – positively charged (protons and neutrons) Nucleus – positively charged (protons and neutrons)

5. Question 1 - 20 Rutherford concluded through his Gold Foil Experiment that the atom is made up of mostly……… Rutherford concluded through his Gold Foil Experiment that the atom is made up of mostly………

6. Answer 1 – 20 Empty Space Empty Space

7. Question 1 - 30 Which subatomic particles are attracted to electrons? Which subatomic particles are attracted to electrons?

8. Answer 1 – 30 protons protons

9. Question 1 - 40 An element contains atoms, isotopes, or ions that all have the same number of which subatomic particle? An element contains atoms, isotopes, or ions that all have the same number of which subatomic particle?

10. Answer 1 – 40 Protons Protons

11. Question 1 - 50 What is the charge of electrons? What is the charge of electrons?

12. Answer 1 – 50 negative. negative.

13. Question 2 - 10 The atomic number of an atom is equal to what? The atomic number of an atom is equal to what?

14. Answer 2 – 10 Protons Protons

15. Question 2 - 20 Calculate the atomic mass of Oxygen with 10 neutrons. Calculate the atomic mass of Oxygen with 10 neutrons.

16. Answer 2 – 20 18 18

17. Question 2 - 30 Element X has an atomic number of 15 and an atomic mass of 37. How many neutrons does element X have? Element X has an atomic number of 15 and an atomic mass of 37. How many neutrons does element X have?

18. Answer 2 – 30 22 22

19. Question 2 - 40 What is the charge of protons? What is the charge of protons?

20. Answer 2 – 40 negative negative

21. Question 2 - 50 What is the atomic number of Calcium? If Calcium has 24 neutrons, what is its atomic mass? What is the atomic number of Calcium? If Calcium has 24 neutrons, what is its atomic mass?

22. Answer 2 – 50 The atomic number is 20, and its mass is 44. The atomic number is 20, and its mass is 44.

23. Question 3 - 10 Define an ion. Define an ion.

24. Answer 3 – 10 An atom with a net positive or negative charge. An atom with a net positive or negative charge.

25. Question 3 - 20 What is the difference between anions and cations? What is the difference between anions and cations?

26. Answer 3 – 20 Anions have a negative charge and cations have a positive charge. Anions have a negative charge and cations have a positive charge.

27. Question 3 - 30 What two subatomic particles must be equal in order to create a neutral atom? What two subatomic particles must be equal in order to create a neutral atom?

28. Answer 3 – 30 Protons and Electrons Protons and Electrons

29. Question 3 - 40 How many electrons are in S -2 ? How many electrons are in S -2 ?

30. Answer 3 – 40 18 electrons 18 electrons

31. Question 3 - 50 Which atom has more electrons? Mg +1 or O -2 ? Which atom has more electrons? Mg +1 or O -2 ?

32. Answer 3 – 50 Mg +1 Mg +1

33. Question 4 - 10 Define isotope Define isotope

34. Answer 4 – 10 Atoms of the same element with different numbers of neutrons resulting in different atomic masses. Atoms of the same element with different numbers of neutrons resulting in different atomic masses.

35. Question 4 - 20 How many neutrons are in a Carbon isotope with a mass of 20? How many neutrons are in a Carbon isotope with a mass of 20?

36. Answer 4 – 20 8 neutrons 8 neutrons

37. Question 4 - 30 The atomic mass is equal to….. The atomic mass is equal to…..

38. Answer 4 – 30 Protons + neutrons Protons + neutrons

39. Question 4 - 40 What happens to the atomic mass if you increase the number of neutrons (this would be an isotope of an atom)? What happens to the atomic mass if you increase the number of neutrons (this would be an isotope of an atom)?

40. Answer 4 – 40 The atomic mass increases The atomic mass increases

41. Question 4 - 50 What has changed about an atom if the number of protons has changed? What has changed about an atom if the number of protons has changed?

42. Answer 4 – 50 The identify of the atom…..new element! The identify of the atom…..new element!