Name: _____________________________
Science 10 Modified
Final Assessment Review: Chemistry
Write the word from the word bank to match the definition:
Valence Electrons on the outer shell of an atom
Groups The columns that run up and down on a periodic table
Periods The rows that run across on the periodic table
Subscripts The tiny numbers behind symbols that indicate the number of atoms
Neutralization The type of equation in which you add a base to a salt and end with a salt
Anion A negative ion, formed when an atom gains electrons
Cation A positive ion, formed when an atom loses electrons
Control A variable that is kept the same in an experiment
Independent A variable that is changed and tested
Dependent A variable that is measured to determine the effect
Reactants The starting elements on the left hand side of an equation
Products The ending elements on the right hand side of an equation
Litmus Strips of paper that changed red if a substance is an acid, or blue if it’s a base
Indicator Any substance that changes colour to indicate the acidity or basicity of a substance
Inferences Reasonable conclusions derived from observations
Observations Gathering of information using the senses
Synthesis/Composition Two or more substances that combine to form one new substance
Decomposition A substance that is broken down into two or more substances
Single Displacement One element takes the place of another element in a molecule
Double Displacement The cations of two different molecules switch to places to form two new molecules
Combustion A substance is burned with oxygen and often produces carbon dioxide and water
OH- Bases release these ions in water
H+ Acids release these ions in water
Anion
Composition reaction
Dependent variable
Independent variable
Litmus
Periods
Single displacement reaction
H+
Cation
Control variable
Double displacement reaction
Indicator
Neutralization
Product
Subscripts
OH-
Combustion reaction
Decomposition reaction
Groups
Inference
Observation
Reactant
Valence Electrons
X-rays
1. How do you calculate the number of:
a) Protons
The number of protons is the same as the atomic number
b) Electrons
The number of electrons is the same as the number of protons
c) Neutrons
The number of neutrons is equal to the mass number subtract the number of protons
2. How does an element in group 17 become stable with a full valence shell of 8?
Elements gain one electron
3. How does an element in group 1 become stable with a full valence shell of 8?
Elements lose one electron
4. List the metalloids on the periodic table
Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium.
5. List the liquids on the periodic table
Mercury and Bromine
6. What are the indications that a chemical reaction has occurred?
1. A new colour appears
2. Heat, light, or sound is given off
3. Bubbles of gas are formed (new odour too)
4. A precipitate (solid material) forms in a liquid
5. The change is difficult or impossible to reverse
7. Do you think harmful cleaning products should be banned/made illegal?
Various, individual answers…
8. Explain the purpose or reason behind IUPAC / Why is this organization important in Chemistry?
In the early days of chemistry, there were no rules for naming compounds. They used trivial or common
names but they told you little or nothing about the chemistry of the compounds. Then, in the mid- to late-1800s,
chemists observed and discovered new patterns of chemical relationships. The International Union of Pure and
Applied Chemistry (IUPAC) was formed in 1919 by a group of chemists. The main aim of IUPAC was to
establish international standards for masses, measurements, names, and symbols used in chemistry.
9. Describe the purpose of WHMIS and why is it important.
The Workplace Hazardous Materials Information System (WHMIS) is Canada's national hazard
communication standard. The key elements of the system are labelling of containers of WHMIS "controlled
products", making and distributing material safety data sheets (MSDSs) and worker education and training
programs.
Balance these chemical equations AND classify the reaction type
a. Composition
1 N2 +3 H2  2 NH3
b. Composition
1 S8 + 12 O2  8 SO3
c. Decomposition
2 HgO  2 Hg + 1 O2
d. Single Replacement
1 Zn + 2 HCl  1 ZnCl2 + 1 H2
e. Composition
4 Fe + 3 O2  2 Fe2O3
f. Double Replacment
1 Fe2(SO4)3 + 6 KOH  3 K2SO4 + 2 Fe(OH)3
Name or write the formula for these Binary Ionic compounds
1. LiF
Lithium Fluoride
2. lithium chloride
LiCl
3. Li2O
Lithium Oxide
4. lithium nitride
Li3N
5. Li3P
Lithium Phosphide
6. beryllium fluoride BeF2
7. BeO
Beryllium Oxide
8. beryllium sulfide
Be3S2
9. BF3
Boron Fluoride
10. boron chloride
BCl3
Name or write the formula for these Molecular compounds
1. Sulfur hexafluoride:
SF6
2. Dinitrogen oxide
N2O
3. Diphosphorus pentoxide
P2O5
4. Selenium dibromide:
SeBr2
5. Arsenic pentafluoride:
AsF5
6. CBr4
Carbon tetrabromide
7. SO3:
Sulfur trioxide
8. P4O10:
Tetraphosphorus decaoxide
Name and/or write the formula for these Acids AND Bases
a)
Hydrofluoric acid
Binary Acid
Formula:
HF
b)
Nitrous acid
Oxoacid
c)
Mg(OH)2
Base
Name:
Magnesium Hydroxide
d)
Aqueous Hydrogen Bromide
Binary Acid
Formula:
HBr
e)
HCl
Binary Acid
Classical Name:
Hydrochloric Acid
f)
Aqueous Hydrogen Phosphate Binary Acid
g)
HI
Binary Acid
IUPAC Name:
Aqueous Hydrogen Iodide
h)
Calcium Hydroxide
Base
Formula:
Ca(OH)2