WorksheetsChemistry Unit 1 T
Total questions: 68
Worksheet time: 2hrs 55mins
How close a measurement is to the accepted value is called..
Accuracy
Precision
Significant
Estimate
What is the first step in the scientific method?
Data
Conclusion
No Horse Play
Observe a problem
How many significant figures: 450 m
3
2
1
0
33 g - 2.1 g = ?
31.9 g
31 g
30.9 g
30 g
0.495 g - 0.101 g = ?
0.394 g
0.3 g
0.4 g
0.494 g
0.495 g - 0.1 g = ?
0.395 g
0.39 g
0.4 g
1 g
67 seconds + 10.1 seconds = ?
77.1
77
70
80
100 / 2.0 =
4.5 x 2.34 =
What is always the first consideration in the lab?
the experiment
safety
horse-playing
the results
What are the correct steps of the scientific method?
hypothesis, research, analysis, conclusion, experiment
research, hypothesis, experiment, analysis, conclusion
experiment, hypothesis, conclusion, analysis, research
research, experiment, analysis, conclusion, hypothesis
Which of the following is quantitative data?
odor
mass
shape
texture
The diameter of earth is 12 756 km. What is this number in scientific notation?
1.28 x 104 km
1.28 x 10-4 km
12.8 x 10-3 km
12.8 x 103 km
Convert 0.15 grams into milligrams.
0.0015 mg
0.00015 mg
15 mg
150 mg
How many significant figures are in the measurement 40. kg?
1
2
3
4
Match the following
accuracy
The closeness of a true value.
precision
The closeness of a true value.
qualitative
An observation using the 5 senses.
quantitative
An observation with numbers
What is the independent variable?
Trey
Age in years
Height in inches
None of these
Homer Simpson is trying to clean his bathroom. He hears that coconut milk will clean mold. He tries the coconut milk on half of the shower and water on the other half. After five days he comes back and nothing has changed. What is the dependent variable?
water
coconut water
amount of time
amount of mold
How many significant figures are in the measurement 100 mL?
1
2
3
4
How many significant figures are in the measurement 0.003 4 kg?
1
2
4
5
What is the result of added 2.5 x 103 and 3.5 x 103?
6.0 x 106
6.0 x 103
6.0 x 102
6.0 x 105
What is the result of multiplying 2.5 x 1010 by 3.5 x 10-7?
8.8 x 10-3
8.8 x 1017
8.8 x 103
8.8 x 10-17
Convert 4.5 dm into m.
45 m
450 m
0.45 m
0.045 m
What is the number 7.9 x 10-3 g in standard notation?
0.079 g
0.0079 g
790 g
7900 g
The diameter of a carbon atom is 0.000 000 000 154 m. What is this number in scientific notation?
154 x 1012 m
154 x 10-12 m
1.54 x 1010 m
1.54 x 10-10 m
