Assessment & Procedural Writing
Assessment Details
Bohr Diagram – (2, 8, 8, 18) – fill the electrons closest to the nucleus
and fill it fully (to the max amount allowed on that
ring/orbital/shell) before making another ring/orbital/shell
Isotopes – some atoms of the same element have more or less mass
than others. When you can figure out which isotope you are working
with  USE THAT MASS. When they do not give you a mass
number or the amount of neutrons,
use the weighted average from the
periodic table.
Ions – elements can either be a collection of atoms (neutral  P = E)
or form ions. When the elements are reacting with other elements
to form compounds, they form ions and react with each other.
Where do you find their ion charges when they are an ion? On the
periodic table! Top of the column (or for transition metals on the
back of the periodic table)
Don’t have to retest on the whole assessment (unless you need to), only
the topics you had trouble with. For example, you just messed up on the Bohr
diagram. I’ll have you draw a Bohr diagram of another atom.
1. How
2. Do
you
3. Write a
4. Procedure?
Salt Solution Activity from the beginning of
the year
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Our goals: 1) Make a 10% salt solution
2) Learn how to use lab equipment
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Procedure Example #1:
Mix salt and water
Procedure Example #2:
We filled the graduated cylinder to 90 mL and then we folded
the paper into four. We also poured about 10 grams of salt
onto the paper on the balance and then pour the water into
the beaker and poured the salt into the beaker of water.
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Procedure Example #3:
1. determining the correct measurements
2. measured water and salt
3. combined salt and water
4. then stirred
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Procedure Example #4:
90 mL of water
10 grams of salt
Procedure Example #5:
mix 1 g salt & water to make a 10% salt solution
1) measure 1 g of salt on a balance
2) pour the salt in a beaker
3) measure 9 g of water in a graduated cylinder
4) mix the 1 g of salt w/ the 9 g of water with a glass stirring rod.
5) then you have a 10% salt solution
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Procedure Example #6:
1. Measure 90 mL of water in graduated cylinder
2. Measure 11 grams of salt on scale
*Only needed 10 grams of salt, but paper added 1 gram
rod
3. Mix the two together in a beaker with a glass stirring
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Procedure Example #7:
(took out two steps to fit on screen better)
1. Obtain salt, water, a graduated cylinder, a beaker, a sheet of filter
paper, a stirring rod, a scoopula and a balance
2. Decide how much salt to use (10 g)
3. Calculate the total mass of solution (use: mass of solute (10g)/mass of
solution x100)
4. Weight the filter paper
5. Place salt on filter paper and calculate weight
6. Subtract the weight of filter paper and get 10 g of salt (NOTE: filter
paper weighs ~1 g per sheet)
7. Remove any excess salt by using scoopula; put aside
8. Fill graduated cylinder with water
9. Pour 90 mL of water into beaker
10. Pour in thte 10 g of salt
11. Stir the solute and solvent with the stirring rod until solute is
dissolved
12. 10% mass salt solution created!
Gold Penny Lab
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Did we really make a penny made of gold?
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Example of a Level 4 Lab Up Front
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Make sure to answer all the questions (in general!)
Strong analysis, explain your thinking!! Don’t just state what you
believe, but explain why you believe it!
There are no reassessment on labs, we will have multiple labs
throughout the semester. If you would still like to make
corrections, go ahead and write it in a different color. In general
for corrections, write it in a different color than originally used.
And write corrected on TOP.
Lab Grade – if you have to be reminded a few times about
safety glasses, the highest grade you may receive is a 2.
Safety glasses is an integral part of lab.