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Chemistry Review Flashcards | StudBud
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Chemistry Review
Chemistry Review
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Final review before chemistry exam.
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
Definition of the law of conservation of mass.
mass can be created
mass can be destroyed
mass is neither created in reactions
2
What does HETEROGENEOUS mean?
same
composed of dissimilar structure
described using numbers
3
What is an element?
cannot be broken into simpler substances
name of a store
4
Which of the following is a heterogeneous mixture?
gasoline
sugar and water
sand and water
air
5
What is a reactant
study of primarily carbon containing substances
tested explanation
a drama queen
starting substance in a chemical reaction
6
All of the following are steps used in the scientific method EXCEPT
experiment
hypothesis
guess
observation
7
Which of the following observations in our daily life is an example of a chemical reaction?
when sugar is mixed with water, it dissolves.
when milk is not refrigerated, it becomes sour
when water is boiled, it vaporizes
vinegar has an acidic taste
8
What is a pollutant
harmful material found in the environment
testing of an idea
study of chemical behavior
9
Which of the following is NOT a physical property of sulfur?
reacts with oxygen
boiling point = 445 degrees
yellow color
density = 2.07 grams
10
What is a pure substance?
sample of matter with defined physical and chemical prop.
sample of desserts
11
What is a theory?
pursuit of knowledge for fun
data
tested explanation after experiment
12
What is a chemical property?
ability to undergo a specific chemical reaction
ability to undergo a physical change
13
What is the dependent variable?observed v
observed variable - what is being measured
observed variable - what is being measured
14
What is another name for a solution?
homogeneous mixture
problem
15
What is a product?
substance you can buy on the street
substance formed in a physical reaction
substance formed in a chemical reaction
16
What is an observation?
composed of uniform structure
information obtained by the use of senses
described using numbers only
17
What is vapor?
helps you feel better
gaseous state of a substance
18
What is an example of quantitative data?
looks very hot
20 feet tall
smells bad
19
What is an experiment?
the conclusion or theory
logical approach to solve a scientific problem
testing of an idea
20
What does homogeneous mean?
one solution (mixture)
two different substances are visible
21
Matter that has neither a defined shape nor volume is a
solid
gas
liquid
plasma
22
what is a chemical?
what difference does it make in life?
who cares?
Anything that has a definite composition.
23
What is an example of qualitative data?
15 cm x 2 cm
rough surface
15 dollars
24
What is a physical property?
measured characteristic not involving a chemical change
observed characteristic not involving a chemical change
all of the above
25
The physial states of matter inlude
gas
all of the above
solid
liquid
26
The study of primarily non-carbon containing substances is called
inorganic chemistry
inorganic chemistry
who cares?
inorganic chemistry
27
what is the definition of mater?
the smallest unit of an element
measurement of Earth's gravitational force on a mass
the size of an object in three-dimensional space
anything that has mass and occupies space
28
What is the formation of gas from a liquid?
condensation
rain
evaporation
29
What are various careers that involve chemistry?
pharmacist
athlete
doctor
nurse
30
What is analytical chemistry?
study of new hair products
study of tv
study of the composition of substances
