Average Atomic Mass
How are the masses on the periodic table determined?
Most elements have more than one naturally occurring isotope. As you learned previously, the atoms of
those isotopes have the same atomic number (number of protons), making them
Make Ready 8/25/16
1. A pure substance is a material that is composed of only one type of particle.
A mixture is a substance made by mixing other substances together.
2. Diagrams c, d, e are mixtures.
Diagrams a, b are a substance.
Make Ready 8/26/16
Mass: kilograms (kg)
Length: Meters (m)
Volume: Cubic centimeters (cm^3)
Temperature: kelvins (K)
5.00 g/m 0.01g
6.5 g/m 0.01g
They both display the same amount of liquid which is 0.01 g.
No, because it would have a different
Make Ready 8/23/16
Identify the following phases.
Define each phase of matter.
Gas: An air like state of matter which can fill up any space available.
Liquid: A state of matter with no definite shape, but a definite volume.
Make Ready 8/24/16
The figure in the upper left corner has both good accuracy and precision.
The figure in the upper right corner has good accuracy, but bad precision.
The figure in the bottom left corner has good precision, but bad accuracy.
The figure i
What part of the demonstration is physical change? Support with evidence.
What part of the demonstration is chemical change? Support with evidence.
Make Ready 8/22/16
Identify the following as physical or chemical changes.
Ice melting is a ph
Significant Figures Notes
Rules for sig figs. in mathematical operations
Multi. And divis. # sig figs in the result equals the number in the least precise measurement
used in the calculation.
12.76 -> 13 (2 sig figs.)
Sig fig practice
Atomic Structure Notes
Scientific Method steps
-Possible explanation for the observation
-Gathering new information to decide whether the hypothesis is valid
A collection term
Collection term states a specific number of items.
1 dozen donuts=12 donuts
1 ream of paper=500 sheets
1 case=24 cans
One mole equals 6.02*1023
The same number of particles as there are carbon atoms in 12.0 g of carbon 12C