WorksheetsChemistry 2 Review
Total questions: 54
Worksheet time: 31mins
What is the product in the following chemical equation?
2H2 + O2 🡪 2H2O
H2
O2
2H2 and O2
2H2O
According to the law of conservation of matter, how does the mass of the products in a chemical reaction compare to the mass of the reactants?
The masses are equal
The mass of the product is greater
The mass of the reactants are greater
No relationship
The formula for carbon dioxide is CO2. What does that mean?
It has two carbon and one oxygen atom.
It has one carbon and one oxygen atom.
It has one carbon and two oxygen atoms
It has two carbon and two oxygen atoms
Which of these is a chemical property?
color
flammability
density
size
You can describe a lemon as being oval, yellow colored, and sour tasting. All of these are _________________.
Physical properties
Physical change
Chemical properties
Chemical change
A chemical property can be observed without changing the substance in some way.
true
false
The ability to burn and/or rust are two examples of physical properties.
true
false
________________ is a possible sign of a chemical change.
A change in shape
A change in state of matter
New material being created
All of the above
The mass of the cube is 15 grams and the volume is 5 milliliters. What is the density of the cube?
3 mL/g
75 g/ml
3 g/mL
75 ml/g
Joey is trying to decide if sulfur is a nonmetal. The element is most likely a nonmetal if _____________________.
Conducts electricity
Has a dull surface
(Malleable) can be hammered into different shapes
Has a high density
Which of the following could be used to describe the characteristics of a nonmetal?
magnetic, ductile, brittle
malleable, ductile, conductor
dull, nonconductor, brittle
brittle, malleable, dull
When vinegar is added to baking soda, which of the following BEST describes what is happening?
color change
temperature change
formation of gas
precipitate forms
The center of an atom is called the (a) .
(b) (positively charged atoms) and (c) are found in the nucleus.
(d) rotate around the nucleus.
electrons
protons
neutrons
photons
This atom has 3 protons in its nucleus:
This atom often has 5 neutrons in its nucleus. (HINT: Remember to substract!)
I am a nonmetal
I am in group 18
I am in period 6
I am…
Rn
Xe
Kr
Ba
The vertical (up and down) columns in the Periodic Table are called
groups
towers
periods
atomic numbers
The rows (side to side) in the Periodic Table are called
groups
towers
periods
atomic numbers
Which elements are colored red?
nonmetals
metals
metalloids
Metals
Nonmetals
Metalloids
Periods
Metal
Nonmetal
metalloids
Both metals and metalloids
The elements classified on the stair case are called . . .
Metals
Nonmetals
Metalloids
Periods
Metal
Nonmetal
Metalloid
Metamorphic
Yes, it can be created.
Yes, it can be destroyed.
No, matter is always conserved
None of these
If 20g of sugar is stirred into a beaker containing 100g of water. What would the mass of the dissolved solution be after the sugar is dissolved fully?
20g
100g
80g
120g
Fe + O2 -> Fe2O3
What information does a subscript number tell us?
the number of atoms per element
the number of molecules per formula
An electron is located ...
in the nucleus.
outside the nucleus.
What is the atomic mass for this element?
6
12.0107
6.0107
18.0107
The center of an atom is called
a/an __________.
atomic mass
nucleus
proton center
energy shell
How do you calculate density?
Density = mass + volume
Density = mass - volume
Density = mass x volume
Density = mass / volume
If an object has a mass of 35 grams and a volume of 5 mL, what is its density?
30 g/mL
7 g/mL
40 g/mL
175 g/mL
What statement about density is true?
Solids are the least dense of all states of matter.
Liquids are more dense than solids.
Gases are the most dense of all states of matter.
Gases are the least dense of all states of matter.
The water in the glass has a density of 1.0 g/mL. If I drink half of the water in the glass, what will be true about the density of the remaining water?
it will be half as dense
it will have a density of 1.0 g/mL
it will be twice as dense
you need to know the remaining volume
The picture shows a ___________________ which forms during a ________________ change.
precipitate, physical
precipitate, chemical
base, chemical
base, physical
The picture represent which of the following which states that matter isn't created or destroyed, just transformed?
Law of Gravity
Law of Physics
Law of Conservation of Energy
Law of Conservation of Matter
If you start an experiment with 15 grams of matter, how much matter would be at the end of the experiment?
15 grams
20 grams
10 grams
18 grams
Is the chemical equation shown balanced or unbalanced?
balanced
unbalanced
What is the volume of the marbles in the picture? (Starting volume is 4 mL and ending volume is 6mL)
10 mL
4 mL
6 mL
2mL
What is the density of a density cube with a mass of 15 grams and a volume of 5 mL?
20 g/mL
10 g/mL
3 g/mL
45 g/mL
How many molecules of carbon dioxide are shown in present in the formula shown?
1
2
6
12
What groups are the most reactive metals?
2 and 3
1 and 18
1 and 2
16 and 17
_________ is when on substance is able to dissolve in another.
phase change
substance
density
solubility
Which of these is a property of metals?
Malleable
Very brittle
Can't conduct electricity
