Chemsitry Branches
What branch of chemistry would you find:
C6H12O6
Organic
Does mass ever change?
No
60 kg = ? g
What is 60,000g?
30940 in sci. notation
3.0940 x 104
A student measured the string as 1.25 m long. The teacher said it was actually 2.12 m long. What was the student’s percent error?
41%
What branch of chemistry would you be able to determine what elements are in salt?
Analytical Chemistry
What is the definition of mass?
Amount of matter in a substance
9,000 m = ? km
What is 9 km?
0.03424 in sci. notation
3.424 x 10-2
The teacher said the volume of liquid was 500.0 mL. When measured, a student found it was 499.7 mL. What was the student’s percent error?
0.06%
What branch of chemistry would you find NaCl?
Inorganic Chemistry
What is the equation for density?
D = m/v
250,000 dag = ? kg
What is 2500 kg?
3.2 x 102 in normal notation
3200
Trial #1 0.95 g/mL
Trial #2 1.16 g/mL
Trial #3 1.26 g/mL
according to the handbook of Chemistry and Physics, 1.15 g/mL
Accurate/Precise/both/neither
None
What branch of chemistry deals with energy?
Physical Chemistry
What is the SI unit for mass?
kilogram
20,000 kg =? mg
What is 20,000,000,000 mg?
4.5 x 102/3543
0.127 or 1.27x10-1
Trial #1 4.75 g/mL
Trial #2 4.76 g/mL
Trial #3 4.74 g/mL
according to the handbook of Chemistry and Physics, 3.75 g/mL
Accurate/Precise/neither/both
precise, but not accurate
What branch of chemistry deals with heat?
Thermochemistry
What is the definition of chemistry?
The study of the composition of matter
7 kg = ? mg
What is 7,000,000 mg?
4.55x1034/2.00x10-23
2.275 x 1057
% Yield
If the actual yield of a reaction was 0.567 g, and the theoretical yield was 0.750 g, what was the percent yield of this reaction?
75.6%