C-Types of reactions: predict and balance

Match the following Formula the type of compound

• Polar Covalent

• H₂O

• Ionic

• NiN

• NonPolar Covalent

• Al₂O₃

• Ionic with transition metal

• H₂

Answer explanation

Ionic = Metal (with one oxidation number)+ Nonmetal

Ionic with transition metal= Metal (with multiple oxidation numbers) + Nonmetal

Polar Covalent= Nonmetal + Nonmetal, the electronegativity difference b/w 0.4 and 1.8

NonPolar Covalent = electroneg. difference less than 0.4

When writing the formula​ for a ​ (a)   compound, the prefixes become the ​ (b)  

• covalent
• subscripts
• ionic
• charges
• Roman numerals

Answer explanation

Covalent compound you use prefixes

mono=1, di=2, tri=3, tetra=4, penta=5, hexa =6, hepta=7, octa=8, nona=9, decka =10

prefix nonmetal (name) + prefix (root)nonmetal-ide (ending)

The name for Cr₂O₃ is ​ (a)  

• Chromium (III) Oxide
• Dichromium trioxide
• Chromium (II) Oxide
• Chromium Oxide

• 2W
• F
• H
• 2P

If an element is diatomic it should have a subscript of___

• 1, always

• 2, only when it is by itself

• it shouldn't have a subscript, it should have a coefficent

Fill in the blank. (Copper has a charge of +2)

Cu+ AgNO₃--> Ag + (a)  

Complete the balanced equation for this Double Replacement reaction.

3 NaOH + Fe(NO₃)₃ -->

• NaFe + OH(NO₃)₃

• 2NaNO₃

• 3 NaNO₃ + Fe(OH)₃

What is the correct way of representing hydrogen gas alone, in a reaction?

• 2H

• H

• H₂

To predict if a single replacement reaction will take place you should use the

• Activity series

• Solubility Chart

• Periodic Table

The symbol for a substance dissolved in water is ...

(a)