Significant Figures or Scientific Notation
Convert 0.003500 mm to scientific notation.
3.500 x 10-3 mm
The definition of chemistry is ____________.
the study of matter and its changes.
What temperature unit do we use in chemistry?
Degrees Celsius
Convert 0.003500 mm to scientific notation.
3.500 x 10-3 mm
How many significant figures in the number 10.440 g?
5 sig figs
Solve (5.99 x 105) / (4.02 x 103)
1.49 x 102
The 3 different types of relationships shown on graphs.
Direct, Inverse, No relationship
When measuring liquid in the lab, this piece of lab equipment is the most accurate.
graduated cylinder
Solve (5.99 x 105) / (4.02 x 103)
1.49 x 102
What is the density equation?
D=m/v
The number of significant figures in 0.003090 mL and the different type of zeros found in the number.
4 significant figures
0.003090 = leading zeros (never significant)
0.003090 = captive zeros (always significant)
0.003090 = trailing zeros (only significant when there is a decimal in the number)
Types of data that deal with descriptions and non-numerical information that can be observed but not measured.
Qualitative
A measurement that includes 3 significant figures includes ____ certain digits and ____ estimated digits
2 certain digits and 1 estimated digit
Using 1 kg = 2.2 lbs, convert 6.90 kg to lbs.
15.2 lbs
Change 295,934 into scientific notation.
2.95934 x 105
Solve 25.6 - 3.647
22.0
Significant figures definition is...
All the certain digits and one estimated digit in a measurement
If the measurement of a baking sheet is 20.20 cm:
a) How many significant figures in the measurement?
b) What is the uncertain or estimated digit?
a) 4 significant figures
b) The last 0 is the uncertain/estimated digit.
Using 1 m = 39.37 in, 1 ft = 12 in, and 1 mi = 5280 ft, convert 120.5 m/hr to mi/hr.
0.0749 mi/hr
7.49 x 10-2 mi/hr
If you add 88.4 + 4.932, how many significant figures will be in your answer?
Answer = 93.3
Sig figs = 3
Solve (6.02 x 1023) x (9.603 x 10-9)
5.78 x 1015
Lydia goes bowling with her friends. Her goal is to score at least 9 pins in every frame. In the first three frames, she knocks down 9 pins, 10 pins, and 8 pins. Was she accurate and/or precise?
She was both accurate and precise. The average of her three frames was 9 and she was within +/- 1 pin of each attempt.
Roger measures 230 mL of water. The graduated cylinder measures to the ______ place. (place value)
hundreds
Given 3 zorks = 1.5 bums, 1 bum = 5 toots, 2 toots = 3 spuds
Convert 1.7 zorks to spuds.
6.4 spuds
If a 330g piece of iron has a density of 1.248 g/cm3, what is the volume?
v = 260 cm3