Test- Atomic Structure

Question 1

1. Substances that cannot be broken down chemically into another substance are

Answer 1

elements

Notebook page 7-6

Question 2

6.the atomic number of magnesium is 12 therefore its nucleus must contain

Answer 2

12 protons and no electrons

Notebook page 7-6

Question 3

7.a neutral atom may contain a protons

Answer 3

Nine neutrons and 8 electrons

Notebook page 7-6

Question 4

14. Which particles determine the atomic number of an element

Answer 4

Protons notebook page 7-8

Question 5

16. The maximum number of electrons that can occupy the second shell of an Atom of magnesium

Answer 5

Eight notebook page 7- 8

Question 6

30. Which of the following elements would be the best conductor of electricity

Answer 6

Silver notebook page 7-15

Question 7

32. Which of the following elements would be the least reactive

Answer 7

Silicon notebook page 7-17

Question 8

37. Arrange the elements on the periodic table based on atomic number

Answer 8

Henry Moseley notebook page 7-2

Question 9

39. Electron cloud model surrounding the nucleus is and electron cloud made of shells electrons do not however travel in a fixed orbit

Answer 9

Schrodinger and Heisenberg notebook page 7-2

Question 10

41. Arrange the elements on the periodic table based on atomic mass

Answer 10

Dimitri Mendeleev notebook page 7-2

Question 11

43. Electrons travel in a fixed orbit around the nucleus of an atom

Answer 11

Niels Bohr notebook page 7-17

Question 12

51. I am isotope of carbon has seven neutrons a. Write this isotopes notation in nuclear form and hyphen form . Is this the most common form of the isotope explain how you know if it is or isn’t

Answer 12

13 C carbon- 13 , No because atomic mass is 12. 011 on periodic table and the most common is 12 notebook page 7-18

Question 13

52. This element is in the same family as BR, but has fewer protons than magnesium it must be. This element has six energy levels and eight valence electrons it must be. This element is in the alkaline earth metals group and has three energy levels it must be. The salmon is in the family with the most reactive nonmetals and asked for energy levels it must be

Answer 13

F, RN, MG, BR.

Notebook page 7- 21

Question 14

54. Classify the following elements is metals nonmetals and metaloides.
    Include one characteristic property of each type

Answer 14

Metals-aluminum sodium/nonmetals- argon , helium , fluorine/ metalloids-Te
Property of metals-good conductor/properties of nonmetals-poor conductor/property of metaloides-semiconductor
Notebook page 7-10