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WorksheetsScience 9 Alberta - Chemistry
Total questions: 25
Worksheet time: 13mins
Which of the following combinations of reactants would have the fastest reaction rate?
Which two elements listed above would be malleable and have a high melting point?
Elements W and X
Elements W and Z
Elements X and Y
Elements Y and Z
Which of the following formulas accurately represents the product described above?
Li3P3
Li3P
LiP3
LiP
The final mass of the cold pack after it has been activated is
half of the original mass
equal to the original mass
slightly less than the original mass
slightly more than the original mass
Match the molecular models shown above with the compounds listed below:
_____ Ammonia, NH3
_____ Ethane, C2H6
_____ Ethene, C2H4
_____ Methane, CH4
1
3
4
2
1
4
3
2
1
2
3
4
2
3
4
1
If the teacher wanted to slow down the speed of this reaction, the next time the demonstration was carried out, the teacher would
increase the initial hydrogen peroxide concentration
increase the initial fluorescent dye concentration
warm one of the initial reactants
cool one of the initial reactants
The number of electrons in one beryllium atom is
9
5
4
2
Which of the following pairs of elements have the most properties in common?
Fluorine and oxygen
Fluorine and chlorine
Sodium and neon
Sodium and magnesium
The process of metal corrosion slows down if a metal is kept:
dry and warm
dry and cool
wet and warm
wet and cool
The melting of ice is considered a
chemical change, because a new substance is formed
physical change, because a new substance is formed
chemical change, because the process is reversible
physical change, because the process is reversible
Which of the following titles is appropriate for the diagram above?
“One Atom of Water”
“Three Atoms of Water”
“One Molecule of Water”
“Three Molecules of Water”
Which of the following statements accurately describes the reaction above?
Combining hydrogen gas and chlorine gas produces hydrochloric acid.
Combining hydrochloric acid with hydrogen gas produces chlorine gas.
Hydrogen gas is produced when hydrochloric acid is combined with chlorine gas.
Hydrogen gas and chlorine gas are produced when hydrochloric acid is broken down.
Section I is best described as:
A Family
Non-Metals
Metals
A Period
Section II is best described as:
A Family
Non-Metals
Metals
A Period
Section III is best described as
A Family
Non-Metals
Metals
A Period
Section IV is best described as:
A Family
Non-Metals
Metals
A Period
Individually, water and sugar are classified as __________ and the combination of both substances is a __________.
compounds; solution
elements; solution
compounds; mechanical mixture
elements; mechanical mixture
Combustion and corrosion are similar reactions because they both
have a metal as a reactant
release oxygen as a product
require oxygen as a reactant
release carbon dioxide as a product
Classify the substances above as ionic or molecular using the following code.
1 = Ionic 2 = Molecular
X =
Y=
Z=
2
1
2
1
2
1
2
2
1
2
1
1
As part of a science lab project, a student was required to perform the following tasks:
I Mix food dye and water
II Burn sugar on a hot plate
III Evaporate water in a kettle
IV Break down steel wool in a blue solution
Which of the tasks are chemical reactions?
I and III
I and II
II and IV
III and IV
What do the three reactions shown above have in common?
They all produce gases.
They are all endothermic.
They are all oxidation reactions.
They all show a reaction between metals and non-metals
Which of the following statements is untrue?
Protons have more mass than electrons and they have opposite charges
Neutrons have the same mass as protons and are found in the nucleus
Electrons have almost no mass and orbit the nucleus in a cloud
There are always the same number of protons and neutrons in an atom
What is the correct name for CaCl2?
Carbon chloride
Calcium dichloride
Monocarbon dichloride
Calcium chloride
What is the correct name for the chemical PO?
Phosphorus oxide
Monophosphorus monoxide
Phosphorus monoxide
Monophosphorus oxide
21 g of sodium acetate, 5 g of water and 2 g of carbon dioxide are produced when 15 g of acetic acid mixed with an unknown mass of sodium bicarbonate.
This mass of sodium bicarbonate is _____ g.
43 g
14 g
13 g
15 g
