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CP Chemistry Unit 1 Review Flashcards | StudBud
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CP Chemistry Unit 1 Review
CP Chemistry Unit 1 Review
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Answers
1
The X-axis of a scientific graph is
Time
The independent variable
The dependent variable
The units
2
The report said the carpark held 240 cars, but we counted only 200 parking spaces. What is the percent error?
30%
-25%
-17%
20%
3
What is precision in science?
How close measurements are to the highest value
How close measurements are to the lowest value
How close multiple measurements are to each other
How close a measurement is to the desired mark
4
Which of the following is an example of quantitative data?
His shirt is orange.
He is a good soccer player.
His GPA is 3.65
That test was hard.
5
The study of chemicals containing Carbon
Inorganic chemistry
Organic chemistry
Analytical chemistry
Biochemistry
6
The closeness of a measurement to its true value is a measure of its ___
usefulness
precision
accuracy
reproducibility
7
Which of the following measurements is expressed to four significant figures?
7077 mg
0.007 m
7.30 x 10-7 km
0.070 mm
8
Which represents the standard notation for the number written in scientific notation?
0.000105
0.00105
1,050
105,000
9
how many significant figures does 1.2310 have
3
4
2
5
10
Estimated value: 15.25. Exact value: 15.375. What is the percent error?
-0.81%
0.08%
0.82%
8%
11
What is the "scientific method"?
An organized way of questioning, seeing, and answering.
A series of steps with a set order of use
A set series of steps used by scientists only
none of these
12
What types of graphs are there?
Bar
Histogram
Line
Pie
13
What is 0.008551 written in scientific notation?
8.551 x 103
.8551 x 10-2
8.551 x 10-3
855.1 x 10-5
14
Qualitative data
data that is continually collected such as weather data
deals with observations, cannot be measured
deals with descriptions
deals with numbers
15
What is the independent variable in an experiment?
The variable that stays the same
The variable measured or observed
The variable being tested and changed
When you hold something constant
16
The variable that is observed or measured during an experiment is called
constant variable
dependent variable
controlled variable
independent variable
17
Round 68387 to 4 significant figures
6838
68390
6839
68380
18
The process of testing a hypothesis under controlled conditions is called a(n) _____.
Experiment
Data/Results
Observation
Conclusion
19
The correct measurements of an object is 68.1 ml. You get measurements of : 98.0 ml, 98.2 ml, 97.9 ml. These are
accurate
neither
both
precise
20
Accuracy and Precision: what does the bullseye depict
Low accuracy & low precision
Low accuracy & high precision
High accuracy & low precision
High accuracy & high precision
21
Which represents the standard decimal notation for the number written in scientific notation?
8300
83,000,000
8,300,000
83000
22
Graphs help scientists to ......?
all answers are correct
analyze data
predict data
see a picture of the data collected
23
What is chemistry?
The study of all living things
The study of elements
The study of matter and how it changes
The study of mixtures
24
How is this number written in scientific notation? 0.00254 cm
2.54 × 10-5
2.54 × 105
2.54 × 10-3
2.54 × 103
25
When graphing, the _____ variable is put on the Y axis
controlled
independent
constant
dependent
26
The study of chemicals that do NOT contain carbon is called what type of chemistry?
Inorganic
Organic
Biochemistry
Physical
27
A hypothesis is a(n) _____________ guess based on _______________ and your knowledge.
funny, jokes
educated, observations
wild, supersitition
uneducated, news
