Miscellaneous
Sig Figs
Scientific Notation
Dimensional Analysis
Measurements
100
Chemistry is the study of this.
Changing of matter
100
How many sig figs are in 120.0
4
100
Put the following into scientific notation:
450,009
4.50009 x 105
100
How many mm are in 12.76 m.
12,760 mm
100
Find the correct measurement with the right number of certain and uncertain digits
21.6 mL
Smallest increment - 1mL
Guess/Uncertain digit - 1/10 mL
200
What a hypothesis versus a law?
Hypothesis - educated guess
Law - a proven mechanism of how a phenomenon works - the "how"
200
How many sig figs 100,000.0
7
200
Put the following into scientific notation.
0.000023
2.3 x 10-5
200
How many grams are in 548.0 mg?
0.548 g
200
Find the measurement with correct number of certain and uncertain digits.
2.33 cm
Smallest increment - 1/10 cm
Guess - 1/100 cm
300
Contrast weight and mass.
Mass - the amount of mater in something
Weight - matter with respect to gravity
300
How many sig figs 4,097,000
4
300
Multiply the following:
(4.2 x 103) x (8.044 x 10-6)
3.4 x 10 -2
300
How many centimeters are in 4.6 feet?
Hint: 2.54 cm = 1 inch
140 cm
300
Find the following measurement with the correct number of certain and uncertain digits.
3.80 inches
Smallest increment = 1/10 in so my uncertain digit is 1/100
400
Difference between accuracy and precision?
Accuracy - close to a value
Precision - consistent
400
How many sig figs are in 120,000,000
2
400
Add (8.9002 x 107) + (12 x 102)
8.9 x 107
400
How many mega-meters are there in 95,600 cm?
9.56 x 10-4 or 0.000956 mega-meters
400
Find the measurement with correct number of certain and uncertain digits.
21.8 degrees
Smallest increment - 1's
Guess - 1/10
500
Where does the independent and dependent variables go on a graph? Define both variables.
Independent - what's changing - x-axis
Dependent - being measured - y-axis
500
Add 401.2cm and 12cm with correct sig figs.
410 cm
500
Subtract the following:
(9.1 x 107) - (2.33 x 106) - (3.04 x 108)
- 2.2 x 108
500
How many seconds are in a year? Show all work on the board.
31536000 seconds
500
Find the measurement with the correct number of digits.
137.40 g
Smallest know increment - 1/10 g
Guess - 1/100 g