Chemistry Unit Review

Ionic, Covalent, Changes + Properties

100

A rock being crushed into tiny pieces is an example of a physical or chemical change?

Physical

200

A substance gives off colour. Is this a physical or chemical change? 

Chemical

300

Is the molecule CO₂ molecular or Ionic? 

Molecular

400

Give 4 examples of Non-metals 

H, He, O, N, P, Si, K, I Br, F, S...

500

What makes something Ionic? 

Metal + Non-metal combined

Balancing

100

How many total atoms are there in Li₂SO₄?

7

200

How many oxygen atoms are in K₂SO₄?

4

300

Is this balanced? 2Na + Cl₂ -> 2NaCl

Yes 

400

Is this balanced? K + I₂ -> KI

No

500

What number(s) would balance this equation?
MgO + ____NaCl -> MgCl₂ + Na₂O

MgO + 2NaCl -> MgCl₂ + Na₂O

Chemical Naming and Formulas

100

What is the name for MgO? 

Magnesium Oxide 

200

What is the chemical Formula for Sodium Chloride? 

NaCl

300

What is the name for NO₂?

Nitrogen dioxide 

400

What is the chemical formula for N₂O₃?

Dinitrogen trioxide 

500

What is the Chemical formula for Magnesium Chloride? 

MgCl₂

Reaction Types

100

Classify the type of reaction shown: H₂O -> H₂ + O₂

Decomposition

200

Classify the type of reaction shown: Na + Cl₂ -> NaCl

Synthesis

300

Classify the type of reaction shown: NaCl + Br₂ -> NaBr₂ + Cl₂

Single Displacement

400

This type of reaction can be compared to two dancing couples switching partners

Double Displacement

500

Classify the type of reaction shown: CH₄ + O₂ -> CO₂ + H₂O

Combustion

Acids, Bases & Neutralization

100

Does an acid or a base feel slippery? 

Base

200

Classify the following pH level as a strong/weak acid, base or neutral substance. pH = 7

Neutral 

300

Classify the following pH level as a strong/weak acid, base or neutral substance. pH of 8 

Weak Base 

400

Classify the following pH level as a strong/weak acid, base or neutral substance. pH=2

Strong Acid 

500

In a Neutralization Reaction, what are the two products produced? 

Water and a salt