What is a quantity that has both a number and a unit?
measurement
100
What does SI stand for?
International system of units
100
What is heavier?
100 lbs of feathers
100 lbs of gold
they are the same.
100
What is a meter?
basic SI unit of length
100
Put in scientific notation
.0456
4.56 x 10 2
200
Put the following number in scientific notation.
741,560,000,000
74156 x 10 11
200
Name the 2 most commonly SI units of temperature
Kelvin and Celsius
200
when temperature increases, density will ________
decrease
200
The measure of how close a series of measurements are to one another is called?
precision
200
Name the 5 SI units commonly used by chemists.
meter, kilogram, kelvin, second, mole
300
What is the difference between accuracy and precision?
accuracy is a measure of how close a measurement comes to the actual or true value.
Precision is a measure of how close a series of measurements are to one another.
300
What is the SI unit of time?
second
300
Density depends on ________ and not on the size of the sample.
composition
300
What is Density?
Ratio of the mass of an object to its volume
300
Put in order from least to greatest.
Argon 1.66
Helium .166
Lead 11.4
Water 1
Helium, Water, Argon, Lead
400
What is the experimental value?
value measured in the lab
400
Place in order from greatest to smallest
ms, ns, ks, cs
ns, ms, cs, ks
400
What is the formula for density?
density = mass / volume
400
What is the SI unit of volume?
cubic meter
400
Convert into Kelvins:
756.15 Celsius
1,029.15
500
what is the difference between the experimental value and the accepted value called?
error
500
Explain the difference between mass and weight.
Mass is the measure of the amount of matter that an object contains.
Weight is a force that measures the pull of gravity on a given mass.