Terms
closeness of a measurement to its true value
accuracy
How many significant figures?
0.0070 g
2
study of processes that take place in organisms
biochemistry
Express 0.000125 in correct scientific notation.
1.25 x 10-4
What is the sum of 6.58 m and 2.0 m?
What's the rule?
8.6 m
Use least number of decimal places.
study of composition and structure of matter
chemistry
How many significant figures?
20,500 m
3
concerned with the mechanism, rate and energy transfer that occurs when matter undergoes a change
physical chemistry
Express 3,000,000 km in correct scientific notation.
3 x 106 km
4.4 mm x 3.15 mm =
What rules applies?
14 mm2
studying chemistry for the sake of knowing the science
pure chemistry
Round to 3 significant figures:
0.00237620 m
0.00238 m
study of carbon compounds
organic chemistry
Multiply 1.5 x 103 by 3 x 10-6
4.5 x 10-3
2.0 x 10-3 x 6.1 x 10-2 =
What is the rule?
1.2 x 10-4
Multiply the numbers and add the exponents.
Put in correct scientific notation.
Calibration improves ______.
accuracy
Which digit is the estimated digit? Explain.
12.687 mL
7
Significant figures include all certain digits and one uncertain digit.
study of chemicals that do not contain carbon
inorganic chemistry
Density of an object is .32 g/cm3 and its mass is 8.0 g. What is its volume?
25 cm3
What absolute zero in Celsius?
0 K = -273 Celsius
C = K - 273
_____ depends on the location of the object.
Weight
How many significant figures?
What 3 rules apply?
0.00410 m
3
Final zeros after the decimal are significant. Zeros used as placeholders are not significant. Non-zero numbers are significant.
study of the composition of matter
analytical chemistry
Convert 5000 L to cubic meters.
5 m3
785 mm = ____ m
.785 m
1000 mm =1 m
785 mm x 1 m/1000 mm= .785 m