1、Solids have a __________ shape and are not appreciably __________.
A、sharp, convertible
B、indefinite, compressible
C、indefinite, incompressible
D、definite, incompressible
E、definite, compressible
2、The symbol for the element potassium is __________.
A、S
B、Ca
C、P
D、Pt
E、K
3、The SI unit for mass is __________.
A、pound
B、kilogram
C、gram
D、troy ounce
4、The temperature of 25°C is __________ in kelvins.
A、166
B、248
C、298
D、103
E、138
5、The density of silver is 10.5 g/cm3. A piece of silver with a mass of 61.3 g would occupy a volume of __________ cm3.
A、644
B、5.84
C、10.5
D、0.171
E、0.00155
6、The correct result of the molecular mass calculation for H2SO4 is ________. 4 × 15.9994 + 32.066 + 2 × 1.0079
A、98.079
B、98.84
C、98.838
D、98.08
E、98.074
7、There are __________ significant figures in the answer to the following computation: (29.2 – 20.0) (1.79 × 105)/1.39
A、3
B、1
C、4
D、5
E、2
8、Of the following, __________ is the smallest mass.
A、25 kg
B、2.5 × 1010 ng
C、2.5 × 109 fg
D、2.5 × 10-2 mg
E、2.5 × 1015 pg
9、Accuracy refers to __________.
A、how close a measured number is to infinity
B、how close a measured number is to other measured numbers
C、how close a measured number is to the calculated value
D、how close a measured number is to the true value
E、how close a measured number
10、In which one of the following numbers are all of the zeros significant?
A、100.09009
B、0.003002
C、0.14329
D、0.1
E、0.05843
