(Q1) Symbols, Formulas, Naming Compounds (pg. 32-36)

Question 1

Symbol

Answer 1

• Represents the name of the element/one atom of the element

Question 2

Formula

Answer 2

• A qualitative and quantitative expression of a compound using symbols in subscripts to indicate the chemical constituents of their respective numbers,
• represent the abbreviation for a compound

Question 3

Object of a Formula

Answer 3

• to achieve a stable electron configuration for each of the elements involved,
• result is that the compound formed has an electric charge of zero

Question 4

Halogens

Answer 4

• 1 Charge

Question 5

Group VIA

Answer 5

• 2 charge

Question 6

Group IIA

Answer 6

+2 charge

Question 7

How to name a metallic element & nonmetallic element

Answer 7

The name of the metallic element remains the same, but the root of the non-metallic element acquires – IDE,

example: sodium chloride

Question 8

Polyatomic Ion

Answer 8

• A group of atoms that acts as a unit and possesses a charge,
• most polyatomic ions are negative
  NH4+ HCO3- OH-