CH2) Atoms, molecules

Question 1

Name of compounds-cations

Answer 1

• Monatomic cations take the name from metal from which they form
• Na+, Sodium ion
• K+, potassium ion
  If more than one charge is possible, a roman numeral is used to denote the charge
• Fe^2+ Iron (II) ion
• Fe^3+ iron (III) ion

Question 2

Name of compounds-Anions

Answer 2

• Mnoatomic anion are named by adding-ide to the stem of the name of the element from which they form
• Oxygen becomes oxide, O^2
• Sulfur becomes sulfie

Question 3

Ionic Compounds

Answer 3

• Combine the name of the cation with name of anion
• Cr(NO3)3, Chromium (III) nitrate
• SnCL2, Tin (II) chloride

Question 4

When a nonmetal form 2 oxoanions

Answer 4

• ate is used for the oone with the larger number of oxygens
• ite is used for the one with smaller number of oxygens

Question 5

When a nonmetal forms more than 2 oxoanions, prefixes are used

Answer 5

• per-(largest number of oxygens)
• Hypo-(smallest number of oxygen)

Question 6

Binary Molecular compounds

Answer 6

• Unlike ionic compounds, there is no simple way to deducted the formula of a binary molecular compounds
• systematic naming
• 1) first word is the name of the firdt element in the formula, with a greek prefix if necessary
• 2) the second word consists of
• the appropiate greek prefix
• stem of the name of the second element
• The suffix-ide

Question 7

Examples

Answer 7

Binary nonmetalic compounds
- N2O5, dinitrogen pentaoxide
- N2O4, dinitrogen tetraoxide
- NO2, nitrogen dioxide
- N2O3, Dinitrogen trioxide
- NO, nitrogen oxide
- N20, dinitrogen oxide

Question 8

step O in mamed compounds

Answer 8

identify ionic or not

Question 9

Acids

Answer 9

• Acids ionize to form H+ions hydrogen and cloride
• ## when put in water, HCI is hydrocloric acids

Question 10

Common oxoacids

Answer 10

HNO3, nitric acid
H2SO4, sulfuric acid