Graded A
Which of the following is considered a hypothesis The base SI unit for temperature is: -
(as opposed to an observation)? - ANSWER -Kelvin
ANSWER -Birds can fly because they have
hollow bones
The correct scientific notation for the number
0.00050210 is: - ANSWER -5.0210 x 10^-4
Which of the following would be considered a
theory? - ANSWER -Helium balloons float
because helium is less dense than air. How many inches are in 25.8 cm? -
ANSWER -10.2 in
Which of the statements below is NOT part of the
scientific method? - ANSWER -All of the Which of the following statements is NOT part of
above steps are part of the scientific method. the rules for determining significant figures? -
ANSWER -Non-zero digits at the end of a
number are not significant.
Which statement about a hypothesis is TRUE? -
ANSWER -All of the above statements are
true. The correct number for significant figures in the
number 1.250100 is: - ANSWER -7
Who discovered the law of conservation of
mass? - ANSWER -Antoine Lavoisier How many milliliters are in 17.5 L? -
ANSWER -1.75 x 10^4 mL
The distance between two hydrogen atoms in a
molecule of water 0.0000000000172 m. Express Which state of matter has atomic spacing that is
this distance in scientific notation. - close together and definite shape? -
ANSWER -1.72 x 10^-10 m ANSWER -Solid
Which of the following would NOT be considered Which state of matter has atomic spacing that is
a correct conversion factor? - ANSWER -1 far apart and definite shape - ANSWER -
pair of shoes = 1 shoe Liquid
In the number 48.93, which digit is estimated? - What is the calue of 783 K in units of C -
ANSWER -3 ANSWER -510 C
The correct number of significant figures in the In order, what is the freezing point, room
number 0.027090 is: - ANSWER -5 temperature and boiling point of water according
to the Celsius scale? - ANSWER -32-75-
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