testable possible explanation of an observation.

Which of the following best describes an example of pure chemistry?

studying chemicals containing carbon

An experiment that has bias ...

is based or manipulated to support an opinion

well-tested explanation for a broad set of observations

Which of the following is LEAST important for a theory to become accepted by the scientific community?

At least 10 well-known scientists have accepted the theory.

Who were the alchemists?

Ancient group that mixed potions (liquids) to try and make gold

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Chemistry Intro

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Questions 20

Answers

1
A student records a solution’s temperature every 30 seconds for an hour. What type of graph should they use?
a pictogram
a bar graph
a pie chart
a line graph
2
A hypothesis is a
definite answer to a given problem.
concluding statement.
proven statement.
testable possible explanation of an observation.
3
Which branch of chemistry studies the rates of reactions?
analytical chemistry
inorganic chemistry
organic chemistry
physical chemistry
4
Which of the following best describes an example of pure chemistry?
developing a cure for osteoporosis
finding an antidote for a new strain of virus
studying chemicals containing carbon
testing the effects of lower concentrations of a drug on humans
5
The factor that is measured in an experiment is the
dependent variable
constant
control
independent variable
6
Which skill are you using when you use your five senses to gather information?
developing hypotheses
observing
posing questions
designing experiments
7
Applied chemistry is
done for research purposes only
done to gain knowledge
done for a specific purpose
futile
8
A group that is treated normally and used as a comparison is
the dependent variable
the experimental group
the independent variable
the control group
9
The branch of chemistry that includes the study of materials and processes that occur in living things is
analytical chemistry.
organic chemistry.
biochemistry.
physical chemistry.
10
A friend went to the beach on a warm day. They saw some black and white birds. Which of the following is an inference?
They saw seagulls.
It was a warm day.
They saw birds.
The birds were black and white.
11
An experiment that has bias ...
fair, repeatable
is based or manipulated to support an opinion
is good experiment
includes multiple trials
12
What type of graph would be best?
Pie
Histogram
Line
Bar
13
Factors in an experiment that do not change from group to group are called
independent variables
dependent variables
controls
constants
14
A theory is a ____.
summary of the results of many observations
proposed explanation for an observation
well-tested explanation for a broad set of observations
procedure used to test a proposed explanation
15
Which branch of chemistry studies the composition of matter?
physical chemistry
analytical chemistry
inorganic chemistry
organic chemistry
16
Which of the following is LEAST important for a theory to become accepted by the scientific community?
It is capable of verification through empirical observations.
Predictions based on the theory later turn out to be correct.
All related evidence can easily be explained by the theory.
At least 10 well-known scientists have accepted the theory.
17
How often should we tell chemistry jokes?
periodically
twice a day
never
every day
18
Who were the alchemists?
Alchemist is synonymous with crazy person.
Alchemists were not a real people group.
Early ancient wizards that wanted to gain favor of kings
Ancient group that mixed potions (liquids) to try and make gold
19
Which of the following observations is quantitative?
The liquid turns blue litmus paper red.
The liquid boils at 100ºC.
The liquid is cloudy.
The liquid tastes bitter.
20
Which of the following is NOT a step in the Scientific Method?
theory
experiment
hypothesis
draw conclusions

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