Chem Chapter 3

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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


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