Grade 10 Chemistry Review

Concept Check

100

What is a chemical reaction?

A change in matter that produces new substances with new properties.

200

What is the term used for substances that react together in a chemical reaction?

Reactants

300

Identify the information listed for the element beryllium: a) symbol b) atomic number c) number of protons d) number of electrons

a) Be b) 4 c) 4 d) 4

400

What is a polyatomic ion?

Ion made using more than 1 element

500

Identify the elements that make up the compound Al₂(SO₄)₃. How many atoms of each element are there?

2 Aluminum 

3 Sulphur

12 Oxygen

Naming & Writing Ionic Compounds

100

Name the following compound: LiF.

Lithium Fluoride 

200

Write the chemical formula for calcium chloride.

CaCl₂

300

Write the chemical formula of aluminum oxide.

Al₂O₃

400

Name the following compound: CuBr

Copper (I) bromide

500

Write the chemical formula of Iron (II) sulfate

FeSO₄

Naming & Writing Molecular Compounds

100

Name the following compound: CO. Why is it a molecular compound?

Carbon monoxide. It is a molecular compound because both parts of the name are non-metals.

200

Quick learning check: What is the difference between an ionic compound and a molecular compound?

Ionic compounds= first part of the name is a metal ion whereas the second part of the name is a non-metal. Molecular compounds= both parts of the name are non-metals.

300

Write the chemical formula of sulfur dioxide

SO(2)

400

Write the chemical formula for carbon tetrachloride.

CCl(4)

500

Name the following compound: NO. Is this a molecular compound?

Nitrogen monoxide. Yes it is a molecular compound because both nitrogen (N) and oxygen (O) are non-metals.

Chemical Reactions

100

What are two ways to tell that a chemical reaction has occurred?

1) change in energy 2) change in colour (products is different colour from reactants) 3) gas is formed (bubbles, odour) 4) precipitate is formed (solid subtance when two clear solutions are mixed)

200

Predict whether a chemical reaction has occurred for the following process: Frying chicken. If yes, state the evidence.

Yes. Evidence: odour

300

What type of reaction is this? copper + silver nitrate ----> silver + copper nitrate

Single displacement reaction

400

Write the chemical equation:

 copper + silver nitrate ----> silver + copper nitrate

Cu + AgNO₃ --> Ag + CuNO₃

500

Combustion of C₃H₈, what is the balanced chemical equation?

C₃H₈ + 5O₂ --> 3CO₂ + 4H2O

Writing & Balancing Chemical Equations

100

Name all the diatomic elements. (Hint: "diatomic 7")

1) hydrogen 2) nitrogen 3) oxygen 4) fluorine 5) chlorine 6) bromine 7) iodine

200

Write the following word equation as a chemical formula: sodium chloride ----> sodium + chlorine

2 NaCl ----> Na + Cl₂

300

Balance the following equation of Potassium joining with Bromine gas to create potassium bromide

2 K + Br(2) ----> 2 KBr

400

Balance the following chemical equation: ___ S + ___ O₂ ----> Sulfur trioxide

2 S + 3O₂----> 2 SO₃

500

Balance the following chemical equation: ___ As + ___ oxygen ----> ___ As₂O₅ What type of reaction is this?

4 As + 5 O₂ ----> 2 As₂O₅ This is a synthesis reaction.