Assignment #2429
Science 9 Matter and Chem
Change Practice Test
Name:
Date:
1) An ionic compound is formed when a metallic ion combines with a non-metallic
ion.
Which of the following chemical formulas represents an ionic compound?
(A) NaCl
(B) CH4
(C) CO2
(D) H2S
2)
Fatima is researching properties of elements. The given chart summarizes some
of her findings.
Elements
Melting Point (°C)
Boiling Point (°C)
Phosphorus
44
280
Potassium
63.5
759
Bromine
58.8
Mercury
356.6
Which two of the given elements are gases at 300°C?
(A)
(B)
(C)
(D)
Potassium and phosphorus
Bromine and phosphorus
Potassium and mercury
Bromine and mercury
3) The atomic number of an element represents its atom’s
(A) protons
(B) neutrons
(C) protons and neutrons
(D) protons, neutrons, and electrons
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Science 9 Matter and Chem
Change Practice Test
4)
An unknown substance has the following properties.
1. Solid at room temperature
2. Tarnishes when exposed to air for a period of time
3. Excellent electrical conductor
4. Malleable
5. Produces bubbling when combined with hydrochloric acid
6. Has a density of 10.5 g/cm3
Of the properties listed above, how many are physical properties?
(A)
(B)
(C)
(D)
5)
2
3
4
5
Four Generalizations About the Periodic Table
1. A vertical column of elements is called a period.
2. Elements on the left side of the periodic table lose electrons when they form
compounds.
3. The elements found in the last column on the right side of the periodic table
are all unreactive.
4. Elements located between the metals and the non-metals on the table are
called metalloids.
Which of these generalizations about the organization of the periodic table is
incorrect?
(A) I
(B) II
(C) III
(D) IV
6) Sodium is an element, whereas sodium chloride (table salt) is
(A) a mixture
(B) a solution
(C) an element
(D) a compound
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Science 9 Matter and Chem
Change Practice Test
7)
The given image shows an element from the periodic table. Its atomic number is
indicated by the arrow.
What happens to the atomic numbers of the elements as you move from left to
right and down on the periodic table?
(A)
(B)
(C)
(D)
8)
The atomic numbers increase.
The atomic numbers decrease.
The atomic numbers stay the same.
Each atomic number becomes twice as large as the one before it.
Shruti was required to make written observations on four substances displayed in
her science class. The following chart shows some of the evidence she collected.
Substance
Evidence
Shiny, reddish solid; soft and
1
bendable; conducts electricity
Grey-black solid; brittle;
2
does not conduct electricity
Yellow, crumbly solid; does
3
not conduct electricity
4
Dull, grey solid; bendable; conducts electricity
Which of the substances are most likely metals?
(A)
(B)
(C)
(D)
1 and 2
3 and 4
2 and 3
1 and 4
9) Which of the following formulas correctly represents the ionic compound iron(III)
chromate?
(A)
(B)
(C)
(D)
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Science 9 Matter and Chem
Change Practice Test
10) Which name correctly identifies KClO3?
(A) Potassium oxide
(B) Potassium oxalate
(C) Potassium chlorate
(D) Potassium chloride
11) Halogens are highly reactive i that form ii charged ions.
This statement is completed by the information in which of the following tables?
(A)
i
metals
ii
positively
(B)
i
metals
ii
negatively
(C)
i
non-metals
ii
positively
(D)
i
non-metals
ii
negatively
12) What groups of the periodic table have to lose two valence electrons and gain one
valence electron, respectively, to form stable ions?
(A) Alkali metals, halogens
(B) Halogens, alkali metals
(C) Alkaline earth metals, halogens
(D) Alkaline earth metals, alkali metals
13) What is the name of the compound
(A)
(B)
(C)
(D)
?
Nitrogen oxide
Dinitrogen oxide
Nitrogen tetraoxide
Dinitrogen tetraoxide
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Science 9 Matter and Chem
Change Practice Test
14) Which of the following statements is true for homogeneous mixtures?
(A) Homogeneous mixtures have several phases.
(B) Homogeneous mixtures have indefinite compositions.
(C) The components of homogeneous mixtures are uniformly mixed in solutions.
(D) The components of homogeneous mixtures can be separated by mechanical
means.
15) Jody knows that the element hydrogen has an atomic number 1 and that the
element oxygen has an atomic number 8.
Jody explained to her science partner that the difference in atomic numbers
means
(A) hydrogen has one energy level and oxygen has 8 energy levels.
(B) hydrogen has one proton and oxygen has 8 protons.
(C) hydrogen has one neutron and oxygen has 8 neutrons.
(D) hydrogen has a mass of one unit and oxygen has a mass of 8 units.
16) Throughout the history of chemistry, several systems have been devised for
naming chemical compounds. The result has been that a particular compound
may have more than one possible name. When doing their jobs, chemists are
often required to communicate information clearly and concisely. In order to
ensure that each compound is named systematically and consistently, a group
of chemists has developed a universal system of naming and writing formulas for
compounds.
The name and abbreviation for the group responsible for establishing a universal
naming system for compounds is the
(A) International Chemical Standardization Committee (ICSC)
(B) International Union of Pure and Applied Chemists (IUPAC)
(C) International Chemical Name Registry Association (ICNRA)
(D) Workplace Hazadous Materials Information Society (WHMIS)
17) What is the name of the compound
(A) Aluminum sulfide
(B) Aluminum(II) sulfide
(C) Aluminum(III) sulfide
(D) Dialuminum trisulfide
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Science 9 Matter and Chem
Change Practice Test
18) Megan wants to replace the handle of her frying pan. At the hardware store, there
are several materials available, but Megan does not know which one would be
best suited to make a handle for a frying pan.
Which of the following materials would make the best handle for Megan’s frying
pan?
(A)
(B)
(C)
(D)
Silver
Plastic
Copper
Aluminum
19) Carbon dioxide (CO2) is also known as dry ice. Carbon dioxide obtained from any
source contains the same percentage of carbon by mass.
The given data illustrates the law of
(A) conservation of energy
(B) conservation of mass
(C) multiple proportions
(D) definite proportions
20) Haley is testing the effectiveness of an antacid at neutralizing a sample of
hydrochloric acid by breaking a tablet of antacid in half, dropping it in a beaker,
and timing the reaction with a stopwatch.
To speed up the rate of reaction, Haley could
(A) cool the antacid in a refrigerator
(B) cool the acid in an ice bath
(C) crush the antacid tablet
(D) leave the tablet whole
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