Test - Atomic Structure

Question 1

1. Substances that CANNOT be broken down chemically into other substances are?

Answer 1

Elements NB Pg. 17

Question 2

32. Which of the following elements would be the least reactive? Iodine, Silicon, Silver, or Argon

Answer 2

Silicon Pg. 20

Question 3

33. With the exception of helium, Group 18 elements usually have ________ valence electrons, so they do not usually react with other elements.

Answer 3

8 NB. Pg 20

Question 4

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

Answer 4

Henry Mosely Pg. 4

Question 5

39. Created the electron cloud model

Answer 5

14. Which particles

Question 6

14. Which particles determine the atomic number of an element

Answer 6

Protons only Pg. 4

Question 7

41. Who arranged the elements on the periodic table based on atomic mass

Answer 7

Dmitri Mendeleev Pg. 4

Question 8

43. Who said electrons travel in fixed orbits around the nucleus of the atom

Answer 8

Neils Bohr Pg. 4

Question 9

45. Name three elements from the group containing the most reactive non metals

Answer 9

Fluorine, Chlorine, Bromine The periodic table 6

Question 10

51. Write the isotope’s notation of carbon with 7 neutrons in nuclear and hyphen form

Answer 10

(Small 13)C, Carbon-13

Question 11

48. How do you find the number of neutrons in an atom

Answer 11

Mass # - Atomic # NB. 5