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Chapter 1 Review (Chemistry) 7th Flashcards | StudBud
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Chapter 1 Review (Chemistry) 7th
Chapter 1 Review (Chemistry) 7th
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Review questions for Chapter 1 Test (Modern Chemistry, 2009)
Flashcards
30 cards
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Questions
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Answers
1
Which state of matter is composed of atoms that have lost many of their electrons?
plasma
gas
solid
liquid
2
Which of the following is a pure substance?
stainless steel
granite
water
air
3
An element near argon in the periodic table would probably be
a good electrical conductor.
a poor heat conductor.
solid at room temperature.
shiny and malleable.
4
Which statement best describes an element?
a substance containing only carbon atoms
a pure substance made up of only one type of atom
any kind of crystal
any combination of two or more atoms of different types
5
Working with mathematical and computer models to learn about chemical reactions represents
physical chemistry.
biochemistry.
theoretical chemistry.
analytical chemistry.
6
Is a cement sidewalk a homogeneous substance or a heterogeneous substance?
Homogeneous
Heterogeneous
7
Which of the following changes is a chemical change of matter?
ice melting to produce water
liquid silica solidifying to form glass
water boiling to prodce water vapor
vinegar combining with baking soda to produce carbon dioxide
8
At sea level, water boils at 100 degrees Celsius. This is an example of a(n)
chemical change.
physical property
chemical property.
extensive property.
9
Is plastic wrap a homogeneous substance or a heterogeneous substance?
Heterogeneous
Homogeneous
10
Noble gases are generally
malleable.
seminconductors.
brittle.
unreactive.
11
The __________ state of matter has a definite volume and a definite shape.
plasma
solid
gas
liquid
12
Is a granola bar a homogeneous or heterogeneous substance?
Heterogeneous
Homogeneous
13
Which of these is an example of an extensive property?
mass
color
boiling point
density
14
Homogeneous mixtures are also called
compounds.
solutions.
atoms.
molecules.
15
The smallest unit of matter that retains the properties of that matter is
a molecule.
an atom.
a compound.
a mixture.
16
The chemical study of carbon containing compounds is known as
organic chemistry
None of the above
theoretical chemistry
inorganic chemistry
17
Which of the following is an example of a heterogeneous mixture?
chunky peanut butter
orange colored sugar water
gold rink
tap water
18
Which is an example of a nonmetal?
mercury
phosphorous
cadmium
copper
19
Research that is carried out for the sake of increasing knowledge is considered to be
None of the above.
technological development.
basic research.
applied research.
20
What is the difference between a mixture and a compound?
All mixtures have a uniform composition.
Mixtures are made of at least two different elements.
All mixtures are heterogeneous.
Mixtures can be separated by physical processes.
21
Which property would be
least
helpful in determining if a substance is a metal or nonmetal?
luster
state
ductility
conductivity
22
A scientist is working to improve a product that uses fiber optics. This is an example of
Both (a) and (c).
technological development.
applied research.
basic research.
23
In the periodic table, elements in the vertical columns together form a(n)
group
cluster
row
period
24
Is sugar a homogeneous or heterogeneous substance?
Homogeneous
Heterogeneous
25
The chemical symbol "W" represents the element
tungsten
tin
cobalt
silicon
26
The branch of chemistry called analytical chemistry most likely would
chemical composition of a new substance.
uses of a particular metal.
effect of a chemical compound on living things.
economic effects of a new substance.
27
The symbol for the element, copper, is
Cp
Co
Cu
Cl
28
One way to separate the different kinds of matter in a mixture is through
decomposition.
chemical reactions.
filtration.
electrolysis.
29
A homogeneous mixture is one that
is uniform in composition.
acts as a solvent.
contains only one element.
cannot change state easily.
30
Are iron filings a homogeneous or heterogeneous substance?
Homogeneous
Heterogeneous
