Chem Chapter 3
On the Celsius scale, the freezing point of water is __degrees Celsius and the boiling point is __, while on the Kelvin scale, the freezing point of water is __ k and the boiling point of water is __ k.
0 100 273 373
Write 0.000 000 1954 in scientific notation. ___ x 10_
1.954 -7
How many calories are required to raise 100 g of pure H2O from 33 degrees Celsius to 35 degrees Celsius?
200
Write 4,358,000 in scientific notation. ____ x 10_
4.358 6
Convert 273 degree Celsius to K.
546 K
What would a 78 kg astronaut's mass be on the moon, where gravity is 1/6 of Earth?
78 kg
K-273
Celsius
What scale is Kelvin equivalent to?
Celsius
Density of a substance generally ___ as temperature ___
Decreases increases
True or False. If a measuring device is working, you can assume that it is accurate.
False
True or False. Absolute zero is equal to 273.15 degrees Celsius.
False *-273.15
True or False. One joule is the amount of heat that raises 1 g of pure water by 1 degree Celsius.
False *Calorie
True or False. Thermal energy always moves from lower temperature to a higher temperature.
False *higher to lower
Volume of most substances ____ as the temperature ____ but mass remains the same
Increases increases
C+273
Kelvin
Temperature SI unit
Kelvin
Freezing point 273.15 degrees & boiling 373.15 degrees
Kelvin scale
5 SI base units
Meter kilogram Kelvin second mole
The average kinetic energy of the particles of matter is a measure of what
Temperature
True or False Density is an intensive property and only depends on composition, not amount.
True
True or False. Absolute zero is the temperature where the kinetic energy of the atoms is zero.
True
True or False. Absolute zero is the zero point on the Kelvin scale.
True
True or False. It is just as important to list the units on a measurement as it is to have an accurate number.
True
True or False. One degree change on the Celsius scale is equivalent to one degree change on the Kelvin scale, so you can write Δ 1 degree Celsius = Δ 1 degree Kelvin.
True
True or False. The International System of Units (SI units) is a revised version of the metric system.
True
True or False. Absolute zero is the point where all the atomic motion stops.
True
True or False. To evaluate the precision if a measurement you must have 2 or more values to compare.
True
Ratio of the mass of an object to it's volume -mass/volume
density
Correct value based on reliable references
absolute value
How close a measurement comes to the actual or true value is called?
accuracy
The quantity of heat that raises the temperature of 1 g of water by 1 degree Celsius
calorie
Freezing point 0 degrees & boiling 100 degrees
celsius scale
SI unit of volume
cubic meter
Capacity to do work/ produce heat
energy
Difference between the experimental value & the accepted value
error
The difference between the measured value & the accepted or true value is called?
error
Value measured
experimental value
SI unit of energy
joule
Mass SI unit
kilogram
Quantity of matter
mass
Quantity that has both a number & unit
measurement
length SI unit
meter
Amount of substance SI unit
mole
Absolute value of the error divided by the accepted value & multiplied by 100%
percent error
How close a series of measurements are to one another
precision
Time SI unit
seconds
The force of Earth's gravity on a mass
weight
