The sentence that helps you remember the metric prefixes
King Henry Died By Drinking Chocolate Milk
100
Define accuracy
how close the value is to the correct answer
100
what is the formula for density
d=m/v
100
What is the same about isotopes?
the atomic # or # or protons
100
Gold Foil Experiment
Rutherford
200
3000 mL = _______L
3 L
200
define precision
how close your measured values are to each other
200
150 grams of a liquid completely fill a 25 mL bottle. What is the density of the liquid?
6 g/mL
200
What is different about isotopes?
their # of neutrons
200
Oil Drop Experiment
Millikin
300
0.349 cm= ________km
0.000 003 49 km
300
what does % error measure?
how far your measured value is from the true value
300
A solution has a density of 3.50g/mL. How many grams are needed to obtain 25.0mL of solution?
87.5g
300
How many protons, neutron, and electrons does Uranium-238 have?
protons=92
neutrons=146
electrons=92
300
Plum Pudding Model
JJ Thomson
400
0.895 hg=_________mg
89,500 mg
400
An object has a mass of 40.0 grams. On Kobe’s balance, it weighs 41.23 grams. What is the percent error of his balance?
3.075%
400
The density of mercury is 13.6 g/mL. What volume would 220 grams of mercury occupy?
16.2 mL
400
How many protons, neutron, and electrons does Uranium-235 have?
protons=92
neutron=143
electrons=92
400
Arranged Periodic Table by atomic mass, aka father of the PT
Mendeleev
500
a cm cubed also equals...
a mL
500
The density of lead is known to be 11.34 g/mL. Eden experimentally found the density of lead to be 10.005 g/mL. What is her percent error?
11.8%
500
28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark. From this information, calculate the density of iron.
7.92 g/mL
500
How many protons, neutron, and electrons does Krypton-82 have?