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Chem 1
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100
Which is not part of the scientific method - a) forming hypothesis b) getting rid of data, or discarding data c) observing and recording data
Getting rid of data
100
Which metric unit would measure mass? a) g b) m c) mm
g
100
Density of a pure gem is 4.5 g/cm. What is the volume of a diamond with a mass of 0.25 g? Hint - V = m/d
.056
100
.6 kg is equal to _________g K H Da Unit d c m
600 g
100
Which has three sig figs? a) 3.065 b) 0.203
b
200
What is a quantitative measurement?
Anything with a number (quantity) Ex) Liquid heating at 86 degrees
200
What does cm3 measure? a) length b) volume c) area
Volume - 3 dimensions, has the 3
200
What is the density of 37.74 g of material whose volume is 6.70. Hint - d = m/v
5.63
200
How many minutes are in one week?
10,080
200
The dimensions of a rectangular solid are 1.26, 1.4, and 2.4. What is the volume? Hint - round to one spot
4.2 (multiply all 3, round to one spot)
300
What is a theory? a) testable statement b) generalization that explains a body of known facts or phenomena
b) A generalization that explains a body of facts or phenomena
300
Which measures the amount of a material - density or mass?
mass
300
200 milliliters is equal to 2______ K H Da Unit d c m
What is 2 deciliters
300
If a chemist obtains the values of 5.3325 g, 5.2587 g, and 5.15478 grams in a experiment, is that poor precision or good precision
poor precision
300
How many sig figs should be shown in the product of 1.4 and 2.6 cm.
2
400
Why do we use standards of measurement?
They are reproducible in another laboratory
400
What two quantities are needed to find density?
Volume and mass (how big it is, how much it weighs)
400
1.07 L of water is equivalent to ______mL K H Da Unit d c m
1070 mL
400
How many sig figs in: 0.000405
3
400
What is 0.000075 written in scientific notation?
7.5 x 10 -5
500
What metric unit would be best for measuring a pen? a) micrometer b) millimeter c) centimeter
Centimeter
500
True or false - Density a physical property?
True
500
How many sig figs in 0.0520
3
500
The average distance between Earth and Mars is 396000 km. Expressed in sci notation, this is written as:
3.96 x 10 5