Types of Compounds

Types of Compounds

How many different ways can you slice the pie?

Classifying Compounds

• By definition, a compound is two or more elements chemically bounded together in a uniform composition with new properties

• These can be classified in four different and overlapping ways

• Organic vs Inorganic

• Binary vs Non-binary

• Molecular vs Ionic

• Acid, base, salt or None of the above

Organic vs Inorganic

• What do all of the organic compounds seem to have in common?

• What do all of the inorganic compounds seem to have in common?

• So the required elements to be considered organic are C and H (O is NOT required)

Multiple Select

Select all of the compounds from the following list that are organic.

• CO₂

• CH₄

• C₂HCl₃O

• Na₂HPO₄

• C₇H₇NO

Binary vs Non-binary

• Let's think about prefixes people, what does the prefix "bi" mean?

• Ok great, so two what's?

• Keep it simple, two capital letters

• Binary = only 2 capital letters in the formula (2 different elements)

• Non-binary = more than 2 capital letters in the formula (3 or more different elements)

• We are NOT looking at how MANY of a specific element there are, but how many DIFFERENT elements there are

Multiple Select

Select all of the binary compounds in the list.

• O₂

• K₂O

• NH₄Cl

• C₆H₁₂O₆

• H₂O₂

Molecular vs Ionic

• This is where you need to know your Periodic Table...

• Ionic STARTS w/ a metal or (NH₄)⁺

• Molecular NEVER has a metal ANYWHERE

• So look for metals, they're anything to the left of that stair-step line thing

• EXCEPT HYDROGEN - NOT A METAL

• Nonmetals are that tiny little cluster on thew top right corner

Multiple Select

Select all of the ionic compounds out of the list.

• CaF₂

• C₃H₈

• Mg₃(PO₄)₂

• Li₂Cr₂O₇

• NH₄Cl

Acid vs Base vs Salt vs None

• Acids start with H and are molecular compounds

• Bases are special ionic compounds that end with OH (mostly....)

• Salts are all of the REST of the ionic compounds that AREN'T bases

• Molecular compounds that don't start w/ H are none of these things

Multiple Choice

Select the answer that correctly identifies the following compounds: Ca(OH)₂, HNO₃, MgF₂, CH₃OH

• Ca(OH)₂ = base, HNO₃ = none, MgF₂ = salt, CH₃OH = base

• Ca(OH)₂ = base, HNO₃ = acid, MgF₂ = salt, CH₃OH = none

• Ca(OH)₂ = base, HNO₃ = none, MgF₂ = salt, CH₃OH = acid

• Ca(OH)₂ = base, HNO₃ = acid, MgF₂ = salt, CH₃OH = base

Open Ended

KMnO₄

Identify this compound by all 4 schemes:

Organic or inorganic

Binary or non binary

Molecular or Ionic

Acid, base, salt or none

Open Ended

H₂SO₄

Identify this compound by all 4 schemes:

Organic or inorganic

Binary or non binary

Molecular or Ionic

Acid, base, salt or none

Open Ended

C₂H₅OH

Identify this compound by all 4 schemes:

Organic or inorganic

Binary or non binary

Molecular or Ionic

Acid, base, salt or none

Open Ended

SO₃

Identify this compound by all 4 schemes:

Organic or inorganic

Binary or non binary

Molecular or Ionic

Acid, base, salt or none

Poll

Would you like more practice problems to try on your own?

• Yes please!

• No I think I'm good with this topic

• No, I know I won't do them anyway

• Yes, but I find this sort of thing on my own so don't go out of your way to make something

Open Ended

Temperature check, where are we at? How are you feeling about compounds?