Unit 1: 2.1: Chemical Symbols

Question 1

The abbreviation for an element consisting of a capital letter; may also be followed by a lowercase letter.

Answer 1

symbol

Question 2

A combination of symbols, subscripts, and possibly superscripts that identifies the composition of an element, compound or ion.

Answer 2

chemical formula

Question 3

What is the name of the element corresponding to the symbol: C?

Answer 3

carbon

Question 4

What is the name of the element corresponding to the symbol: Br?

Answer 4

arsenic

Question 5

What is the name of the element corresponding to the symbol: Hg?

Answer 5

germanium

Question 6

What is the name of the element corresponding to the symbol: Sr?

Answer 6

plutonium

Question 7

What is the symbol of the element manganese?

Answer 7

Mn

Question 8

What is the symbol of the element arsenic?

Answer 8

As

Question 9

What is the symbol of the element germanium?

Answer 9

Ge

Question 10

What is the symbol of the element plutonium?

Answer 10

Pu

Question 11

Determine the relative number of each type of element in the compound
CO2

Answer 11

two atoms of oxygen, O, for every atom of carbon, C

Question 12

Determine the relative number of each type of element in the compound
PCl3

Answer 12

three atoms of chlorine, Cl, for every atom of phosphorus, P

Question 13

Determine the relative number of each type of element in the compound
Fe(OH)3

Answer 13

three atoms of oxygen, O, and three atoms of hydrogen, H, for every atom of iron, Fe

Question 14

Determine the relative number of each type of element in the compound Na2S

Answer 14

two atoms of sodium, Na, for each atom of sulfur, S.

Question 15

Determine the relative number of each type of element in the compound B2H6

Answer 15

six atoms of hydrogen, H, for every two atoms of boron, B

Question 16

Ni(ClO4)2

Answer 16

1x2=2 atoms of chlorine, Cl, and 4x2=8 atoms of oxygen, O, for each atom of nickel, Ni