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Worksheetschem test 1
Total questions: 21
Worksheet time: 11mins
what is a theory?
an explanation that has been repeatedly supported by many experiments
an educated guess based on prior knowledge
a thought that has been proven scientifically
what is the SI base unit for distance?
kilograms
seconds
mole
meter
what is the SI base unit for amount of a substance?
mole
kilogram
seconds
meter
what is the SI base unit for mass?
meter
kilogram
seconds
mole
what is the SI base unit for time?
seconds
kilogram
mole
meter
why is the SI base unit for temperature kelvin?
there is virtually no kinetic energy/particle motion
it sounds smarter
there is too much kinetic energy/particle motion
put into scientific notation: 0.0008
8.0 x 10^-5
8.0 x 10^3
8.0 x 10^-4
put into standard notation: 2.2 x 10^5
2,200
0.000022
220,000
what is the sum of (1.23 x 10^5) + (5.35 x 10^6)?
5,473,000
123,000
5,350,000
what is the product of (1.5 x 10^-2) • (8.0 x 10^-1)?
0.015
0.8
0.012
what is the product of (1.5 x 10^-2) • (8.0 x 10^-1)?
0.015
0.8
0.012
what is the product of (1.5 x 10^-2) • (8.0 x 10^-1)?
0.015
0.8
0.012
how many significant figures are in this number: 50,200
5
3
2
how many significant figures are in this number: 3.60 x 10^5
3
2
8
what are the prefixes in the metric system?
deca
hecto
kilo
milli
deci
how many meters are in 2.4km?
2,400
240
24,000
accuracy is how close a measured value is to an accepted value and precision is how close a series of measurements are to one another
true
false
where does the independent variable go on a graph?
x-axis
y-axis
where does the dependent variable go on a graph?
x-axis
y-axis
what piece of equipment is used to measure volume of a liquid?
graduated cylinder
beaker
test tube
what is the curved surface area of the water called?
meniscus
level top
none of the above
