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Grade 10 Review Questions
1 Which of the following properties of sugar is not a physical property?
Sugar turns black when it is heated.
Sugar dissolves readily in water.
Sugar has a sweet taste.
Sugar is a white solid at room temperature.
2 Which of the following describes a chemical property?
Mercury is a liquid at room temperature.
Aluminum is malleable.
Hydrogen reacts explosively with oxygen in the presence of a flame.
You slide across the side walk as you step on an earthworm.
3 Which property is described by the statement that aluminum can be bent into various shapes?
density
malleability
hardness
viscosity
4 Two different brands of hair shampoo behave differently when poured out of their containers. Brand A pours very slowly,
while brand B pours much more quickly. What statement below describes this difference?
Brand A is less ductile than brand B.
Brand A has a higher boiling point than brand B.
Brand A has a higher density than brand B.
Brand A is more viscous than brand B.
5 The liquid state of matter has
an indefinite shape and a definite volume.
a definite shape and a definite volume.
an indefinite shape and an indefinite volume.
a definite shape and an indefinite volume.
6 The density of aluminum is 2.7 g/mL. Four students each measured the mass and volume of a sample of metal; their
results are shown below. Only one of the students actually had a sample of aluminum; the other students had different
materials. From the information given, decide which student had the aluminum.
mass = 28.4 g; volume = 76.7 mL
mass = 37.4 g; volume = 15.1 mL
mass = 88.3 g; volume = 30. mL
mass = 76.7 g; volume = 28.4 mL
7 The density of silver is 10.5 g/mL. If you had a piece of silver with a mass of 458 g, what would the volume of the piece of
silver be?
0.022 mL
43.6 mL
447.5 mL
468.5 mL
8 Identify the chemical change in the following list:
the crushing of stones
the formation of clouds
the separation of cream from milk
the burning of a candle
9 A physical change in a substance
results in a change in the mass of the substance.
changes the form or state of the substance.
changes it into a different substance.
is usually very hard to reverse.
10 Which one of the following observations provides certain evidence that a chemical change has occurred?
A change of state takes place.
A new substance is formed.
There is a change in volume.
Heat is given off.
11 Iron is widely used to build cars, bridges, and buildings. One of the major problems with iron is that it rusts under certain
conditions. The reaction of iron to form rust is called
combustion
precipitate
a physical change
corrosion
12 A pure substance consisting of two or more kinds of atoms is considered to be
an element
a solution
a compound
Married
13 Which one of the following substances is an element?
Helium
Milk
Salt
Water
14 When electricity is passed through water, a chemical reaction takes place. In this reaction
the products are nitrogen and oxygen.
the products are carbon dioxide and oxygen.
the products are water and hydrogen peroxide.
the products are hydrogen and oxygen.
15 The total number of atoms represented by the formula K2CrO7 is
1
3
11
28
16 In a famous experiment carried out in 1911, Ernest Rutherford bombarded a thin sheet of gold with high-speed, positively
charged particles. Based on the behaviour of these particles, Rutherford proposed that atoms possessed
a very small, positively charged, dense region in the centre of the atom.
a very small, negatively charged, dense region in the centre of the atom.
very small, positively charged particles that moved at high speed.
equal numbers of positive and negative particles.
17 According to the Rutherford model of the atom, most of the space that an atom takes up consists of
protons
a nucleus
neutrons
empty space
18 The number of electrons in an atom is the same as
the number of neutrons in the atom
the mass number of the atom
the number of protons in the atom
the difference between the mass number and atomic number
19 The number of protons in an atom is represented by its
atomic nucleus
electon number
atomic mass
atomic number
20 The symbol Cl represents an atom with
17 protons, 20 electrons, 20 neutrons
17 protons, 17 electrons, 17 neutrons
20 protons, 20 electrons, 17 neutrons
17 protons, 17 electrons, 20 neutrons
21 Which of the following is the correct arrangement of electrons in a sulfur atom, atomic number 16
2, 8, 4, 2
2, 8, 6
6, 8, 2
2, 6, 8
22 Isotopes of an element have different
numbers of electrons.
numbers of neutrons.
electron arrangements.
numbers of protons.
23 In which group of the periodic table are the halogens found?
1
2
15
17
24 Which group in the periodic table contains the noble gases?
1
15
17
18
25 The most metallic elements in the periodic table are found
on the extreme right of the table.
on the extreme left of the table.
in the middle of the table.
in the second column.
26 Which of the following groups of elements contains only metalloids?
Li, Na, K, Rb
Ge, As, Sb, Bi
Ge, As, Sb, Te
Ge, Pb, Au, Ag
27 Which of the following elements would you expect to react in a manner most similar to nitrogen?
sodium (Na)
neon (Ne)
oxygen (O)
phosphorus (P)
28 Elements that possess some properties of metals and some properties of nonmetals are called
alkali metals
metalloids
noble gases
heavy metals
29 Which of the following materials will float in water?
A. rubber (density = 1.2 g/mL)
B. olive oil (density = 0.920 g/mL)
C. mercury (density = 13.6 g/mL)
D. ice (density = 0.920 g/mL at 0 degrees C)
all will float
B and D only
A and C only
A, B and C only
30 The smallest particle of an element that is still that element is a(n)
molecule
hunk
atom
chunk
31 The two elements that are found as liquids at room temperature are
dihydrogen oxide, waterium
sodium, chlorine
mercury, iodine
mercury, bromine
32 Which planet has more greenhouse gases than found on Earth?
Mercury
Venus
Mars
Earth