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Chemistry Unit 1 Flashcards | StudBud
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Chemistry Unit 1
Chemistry Unit 1
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Answers
1
Baseball bats are an example of pure science?
False
True
2
Which of the following is a qualitative observation?
My child weighs 22 pounds
Aluminum is silver
There are 7 lamps in my living room
My dog is black
3
How many sig figs are in 1.80 x 10^2
4
2
3
5
4
All matter is considered to be chemicals.
True
False
5
What is 3,789,000 in scientific notation?
3.789 x 10^-6
3789 x 10^3
3.789 x 10^6
0.3789 x 10 ^ -7
6
Round to the correct number of sig figs. 24.6209/0.003048
8077
8078
8,077.7231
8077.7
7
Round to the correct number of sig figs. 61 + 7.459
68.459
68.5
68
68.46
8
Chemistry is the study of . . .
The composition and properties of matter
The life processes of living things
Chemicals
Elements and Compounds
9
You should use all of your senses to make observations in chemistry class.
True
False
10
Round your answer to the correct number of sig figs. 98.1 x 0.03
3
2.94
2.9
2.943
11
Round to the correct number of sig figs. 78.44 - 24.685
53.755
54
53.8
53.76
12
How many sig figs are in 0.000004022
4
10
9
3
13
Inorganic chemistry studies?
The composition of matter
Carbon
The chemistry of living things
All elements except carbon
14
A quantitative observation must include a measurement
True
False
15
What is true about a scientific law?
It states what happened.
It describes why something happened
Explains scientific theories
It never changes
16
How many sig figs are in 78,000,000
8
5
2
1
17
I am ready for this test.
Nope, I need to study.
Yes!
18
How do scientists solve problems?
With technology
Experiments
Letting others do it
The scientific method
19
What is NOT true about a scientific theory?
It is subject to change
It explains a scientific law
It explains what happened
It is based on evidence
20
What is 4.28 x 10^-5 in standard form?
42,800
0.0000428
428,000
0.00428
