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Chapter 3 Chem.
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Gravity
Terms in this set (30)
Closeness to true value
Accuracy
Known or estimated in a measurement
Significant figure
The force of gravity on an object
Weight
Narrowness of range of measurements
Precision
The lowest point on the Kelvin scale
Absolute zero
The quantity of matter an object contains
Celsius temperature scale
The SI scale for temperature
Kelvin temperature scale
The closeness of a measurement to its true value is a measure of its
Accuracy
How many significant figures are in the measurement 0.0034 kg?
Two
How many significant figures are in the measurement 40,500 mg?
Three
How many significant figures are in the measurement 811.40 grams?
Five
If the temperature of a piece of steel decreases, what happens to its density?
The density increases
What is the temperature -34 degrees Celsius expressed in Kelvins?
339 K
If the temperature changed by 100 K, by how much does it change in degrees Celsius?
0 degrees Celsius
If a liter of water is heated from 20 degrees Celsius to 50 degrees Celsius, what happens to its volume?
The volume increases
What is the SI unit of mass?
Kilogram
Density is found by dividing
Mass by volume
What is the boiling point of water in Kelvins?
373 K
The expression of 5008 km in scientific notation is ?
5.008 x 10 to the 3rd power km
Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance that was used is?
Precise
Express the sum of 1111 km and 222 km using the correct number of significant digits
1333 km
What is the temperature of absolute zero measured in Celsius
-273 degrees Celsius
Express the sum of 7.68 m and 5.0 m using the correct number of significant digits
12.7 m
The chief advantage of the metric system over other systems of measurement is that it
Is in multiples of 10
Chlorine boils at 239 K. What is the boiling point of chlorine expressed in degrees Celsius
-34 degrees Celsius
In the measurement of 0.503 L, which digit is the estimated digit?
3
What is the volume of 46.5 g of silver if the density of silver is 10.5 g/mL?
4.34 mL
What temperature scale has no negative temperatures?
Kelvin
The weight of an object
Depends on its location
What quantity is represented by the metric system prefix deci-?
0.1
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