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Chapter 1 Review Flashcards | StudBud
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Chapter 1 Review
Chapter 1 Review
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Answers
1
Which is a chemical change?
water vaporizes
vinegar combined with sodium bicarbonate to produce CO2
dry ice sublimes
liquid silica solidifies to produce glass
2
A compound is
a substance that can be separated by physical means
another word for a molecule
composed of 2 or more elements that are chemically bonded
a molecule formed by atoms of the same element
3
Which phase is composed of matter that has lost many of its electrons?
solid
gas
liquid
plasma
4
The horizontal rows of the periodic table are called
groups
columns
families
periods
5
Which of the following is NOT classified as an element?
CO
Ne
Co
H
6
A scientist is working with compounds containing carbon.What field of chemistry is this likely?
inorganic chemistry
organic chemistry
physical chemistry
theoretical chemistry
7
Which of the following is an extensive property of matter?
volume
melting point
density
boiling point
8
Which phase of matter consists of charged particles heated to extreme temperatures?
plasma
gas
liquid
solid
9
_____ is an example of a homogeneous mixture.
air
chocolate milkshake
water
oil and vinegar salad dressing
10
What are the materials that enter a chemical reaction known as?
compounds
products
reactants
elements
11
An element near argon in the periodic table would probably be...
a poor conductor of heat
shiny and malleable
a good electrical conductor
a solid at room temperature
12
Which of the following is a heterogeneous mixture?
chunky peanut butter
gold ring
orange colored sugar water
tap water
13
A substance that consists of uncharged particles and does not have definite shape or volume is
liquid
solid
gas
plasma
14
Which of the following is a pure substance?
soil
sodium chloride solution
lemonade
carbon dioxide
15
A block of dry ice changes from the solid state to gas state. What type of change is this?
physical
chemical
16
___ make up the majority of elements in the periodic table.
nonmetals
metalloids
mixtures
metals
17
Analytical chemistry would be used in determining...
chemical composition of a new substance
uses of a particular metal
economic effects of a new substance
effect of a compound on living things
18
Which of the following is NOT a pure substance?
NaCl solution
He gas
liquid N2
solid CO2
19
Homogeneous mixtures are sometimes called
compounds
molecules
atoms
solutions
20
Which of the following is an intensive property of matter?
volume
length
density
mass
21
Which of the following is a pure substance?
water
air
stainless steel
granite
22
Which property would be least helpful in determining whether a substance is metal or nonmetal?
state
ductility
malleability
conductivity
23
What is the only certain evidence that a chemical change has taken place?
A different substance is formed
Energy is released
24
Which of the following is a physical change in matter?
a nail rusting
a silver spoon tarnishing
ice cream melting
paper burning
25
What happens to the total amount of matter during a chemical reaction that gives off a great amount of heat energy?
increases
does not change
decreases
cannot be determined
26
Which element will have the most in common with chlorine?
Ar
S
C
F
27
What is the freezing point of nitrogen an example of?
chemical property
physical change
physical property
chemical change
28
A homogeneous mixture is one that
is uniform in composition
contains only one element
cannot change state easily
acts as a solvent
29
What is the difference between a mixture and a compound?
All mixtures have a uniform composition.
Mixtures contain at least 2 different elements.
All mixtures are heterogeneous.
Mixtures can be separated by physical processes.
30
One way to separate the different components of a mixture is
chemical reactions
filtration
electrolysis
decomposition
31
A _____ mixture has a uniform composition
homogeneous
heterogeneous
32
Which branch of chemistry pertains to most carbon compounds?
analytical
organic
inorganic
physical
33
Compare the physical properties of metals and nonmetals. Which is true?
metals generally have higher melting points than nonmetals
nonmetals are generally more ductile than metals
34
Which statement best describes an element?
the smallest particle of matter
a substance containing only carbon atoms
a pure substance made up of only one kind of atom
any combination of 2 or more atoms of different types
35
Which property is true of every metal?
The element is a solid at room temperature
The element is a good electrical conductor
36
The smallest unit of matter that retains properties of that matter is __?
atom
molecule
compound
ion
37
Which is an example of a nonmetal?
cadmium
phosphorus
mercury
copper
