Test- Atomic Structure

Question 1

2. The measurement of how much matter an object contains is it’s

Answer 1

Mass. 7 4

Question 2

4. Each family in the periodic table has its own characteristic properties based on the number of

Answer 2

Valence electrons 7 13

Question 3

7. A neutral atom may contain 8 protons

Answer 3

9 neutrons and 8 elections 7 14

Question 4

14. Which particles determine the atomic number of an element?

Answer 4

Protons only 7 5

Question 5

17. What is the correct electron arrangement for sulfur

Answer 5

2- 8-6 7 13

Question 6

19. Which of the following is a transitional metal?
A. Calcium 
B nickel 
C. Aluminum 
D. Tellurium

Answer 6

Nickel 7 16

Question 7

22. An element is electrically neutral because

Answer 7

The number of protons and electrons are equal 7 13

Question 8

25. When looking at the halogens on the periodic table, how does the number of valence electrons change as the energy level is increased.

Answer 8

The total number of valence electrons does not change. It remains 7 7 16

Question 9

46. In each period, how does the number of electrons in each kind of atom change from left to right between groups 1 and 2? Explain how

Answer 9

Atoms electrons increase by one because atomic number( protons) increase by one. 7 16

Question 10

51. An isotope of carbon has 7 neutrons

C. Is this the most common form of the isotope? Explain how you know if it is or isn’t

Answer 10

No because average atomic mass is 12.011 on pt common 12c

7 16

Question 11

52. A. This element is in the same family as Br, but has fewer protons than Mg. It must be____
    B. This element has 6 shells and 8 valence electrons. It must be

Answer 11

A. F
B. Rn

7 16

Question 12

54. What properties of non metals

Answer 12

Poor conductors

7 14

Question 13

39. Electrons cloud model, surrounding the nucleus is an electron cloud made of shells- electrons do not, however, travel in a fixed orbit.

Answer 13

Shrodinger and heisenburg 7 4