WorksheetsUnit 2 (Chemistry Foundations) Review
Total questions: 35
Worksheet time: 9mins
Name
Class
Date
1.
A gaseous state of a substance that is a liquid or solid at room temperature
a)
Vapor
b)
Gas
c)
Plasma
d)
Liquid
2.
Which of the following would a chemist be most likely to study?
a)
A leaf being blown by the wind
b)
A leaf change color in autumn
c)
A leaf floating on the wind
d)
A leaf being eaten by insects
3.
How do you calculate density?
a)
Divide weight by volume
b)
Multiply mass by volume
c)
Divide mass by volume
d)
Multiply weight by volume
4.
A property that depends on the amount of matter in a sample
a)
external property
b)
internal property
c)
extensive property
d)
intensive property
5.
Separating a solid from a liquid by evaporation is called _________.
a)
filtration
b)
distillation
c)
destination
d)
boiling
6.
True or false: a scientific theory can never be proven (pick the BEST answer).
a)
True - it is a theory, a proposed explanation but not necessarily the truth. Theories are still tested and sometimes modified
b)
True - it is true until proven false
c)
False - Theories always become laws once proven
d)
False - theories are only proposed explanation
7.
This is a definition of what: Anything that occupies space and has mass.
a)
A solid
b)
Matter
c)
Chemistry
d)
A liquid
8.
This is a definition of what: A quality or condition of a substance that can be observed or measured w/out changing the substance's composition
a)
extensive property
b)
intensive property
c)
chemical property
d)
physical property
9.
The study of the composition of matter.
a)
Applied chemistry
b)
Physical chemistry
c)
Pure chemistry
d)
Analytical chemistry
10.
What is the first step in the scientific method?
a)
Observation
b)
Hypothesis
c)
Planning
d)
Theory
11.
A physical blend of two or more components.
a)
substance
b)
phase
c)
mixture
d)
heterogeneous substance
12.
Usually involves changing the state of matter.
a)
chemical change
b)
chemical reaction
c)
physical property
d)
physical change
13.
Involves the production of a new substance.
a)
physical change
b)
chemical property
c)
chemical change
d)
none of the other answers
14.
Part of a sample with uniform composition and properties.
a)
phase
b)
mixture
c)
solution
d)
substance
15.
A mixture not having a uniform composition throughout.
a)
heterogeneous
b)
homeogeneous
c)
uniform
d)
consistent
16.
What are the four indications that a chemical reaction has taken place?
a)
Transfer of energy, light emitted, production of a gas, solid formed
b)
Transfer of energy, color change, production of a gas, creation of a precipitate
c)
Transfer of energy, color change, light emitted, solid formed
d)
Transfer of energy, color change, production of a gas, it rains
17.
What distinguishes a substance from a mixture? (Choose BEST answer)
a)
Substances have a fixed composition while a mixture does not
b)
Substances are homogeneous and can be separated thru chemical means
c)
Substances are heterogeneous and be separated thru chemical means
d)
Substance
18.
State of matter that takes both the shape and volume of its container.
a)
Plasma
b)
Gas
c)
Liquid
d)
Solid
19.
The study of the mechanism, rate, and energy transfer that occurs when matter undergoes a change.
a)
Analytical chemistry
b)
Pure chemistry
c)
Applied chemistry
d)
Physical chemistry
20.
The variable that is observed during an experiment is what type of variable?
a)
Responding variable
b)
Independent variable
c)
Manipulated variable
d)
None of the other answers
21.
Chemical formula and symbols represent, respectively ...
a)
Elements and compounds
b)
Compounds and elements
c)
Substances and mixtures
d)
Mixtures and substances
22.
A homogeneous mixture, usually in aqueous form.
a)
solution
b)
compound
c)
phase
23.
Which of the following is NOT a way that Lavoisier transformed chemistry?
a)
Changed from a science of observation to a science of measurement
b)
Discovered oxygen is required to burn anything
c)
Created extremely accurate scale
d)
Created the first workable model of the atom
24.
The study of chemistry for the pursuit of knowledge
a)
Applied chemistry
b)
Pure chemistry
c)
Analytical chemistry
d)
Physical chemistry
25.
A change that produces matter with a different composition than the original matter
a)
Physical change
b)
Chemical change
c)
Composition change
d)
Mixture change
26.
A well-tested and widely accepted explanation for observable facts
a)
Hypothesis
b)
Scientific Theory
c)
Scientific Law
d)
Experiment
27.
The ability of a substance to undergo a specific chemical change is called a...
a)
chemical property
b)
physical property
c)
chemical change
d)
physical change
28.
A property that depends on the type of matter in a sample, not the amount of matter.
a)
Intensive property
b)
Extensive property
c)
Internal property
d)
External property
29.
There are two main materials being reacted for tomorrow's lab. Name them.
a)
Copper(II) chloride and tin foil
b)
Copper(II) chloride and aluminum foil
c)
Cobalt(II) chloride and gold foil
d)
Cobalt(II) chloride and aluminum foil
30.
A material found in air, water, or soil that is harmful to humans or other organisms
a)
Pollutant
b)
Polish
c)
Organisms
d)
Biography
31.
The means by which a society provides its members with those things needed and desired.
a)
Technology
b)
Innovation
c)
Technical
d)
Integral
32.
The study of matter and the changes it undergoes.
a)
Chemistry
b)
Biochemistry
c)
Science
d)
Technology
33.
The study of matter containing carbon.
a)
Organic chemistry
b)
Inorganic chemistry
c)
Biochemistry
d)
Biotechnology
34.
The study of processes that take place in organisms.
a)
Organic chemistry
b)
Inorganic chemistry
c)
Biochemistry
d)
Biotechnology
35.
This applies science to the production of biological products or processes.
a)
Organic chemistry
b)
Inorganic chemistry
c)
Biochemistry
d)
Biotechnology
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