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1. What was Democritus’ view on atomic theory?
2. Define atom.
3. How did Dalton base his atomic theory off of?
4. What were Dalton’s three parts of his atomic theory?
5. What did J. J. Thomson discover?
6. Describe Thomson’s experiment.
7. How did Rutherford refine Thomson’s model?
8. Describe Rutherford’s experiment.
9. What is the nucleus?  Who discovered it?
10. How many times smaller is the nucleus compared to the rest of the atom?
11. What did Neils Bohr do to contribute to the atomic model?
12. How does Modern atomic theory differ from Bohr’s model?
13. What is an atom made up of? (subatomic particles)
14. What is the atomic mass unit?
15. What is the AMU of a proton, neutron and electron?
16. What is an ion?
17. How does an atom become and ion?
18. What does the atomic number represent?
19. What does the atomic mass represent? (mass number)
20. What is an isotope?
21. If you have an isotope of Hydrogen what is the number of protons?
22. Define gravitational force, electromagnetic force, strong force and weak force.

Science:  Today in class we went over how to find out the number of protons neutrons and electrons.  Homework for Friday is to figure out the number of protons neutrons and electrons for elements 1-20.  Don’t forget the test is Monday October 5th and the 1st quarter exam is October 7th.

Physical Science:  Today in class we discussed suborbitals as well as some other topics.  The homework for Friday is chapter 17 section 1, 2, & 3 section reviews.   Don’t forget the test is Monday October 5th and the 1st quarter exam is October 7th.

Science:  Today in class we went over chapter 10 section 1.  Chapter 10 Section 1 section review was homework.

Physical Science:  Today in class we learned about the different orbitals.  Homework was to draw Bohr Model diagrams for elements 1-20.

Science:  Today in class we went to the lab and completed a lab over the modern atomic model.  Lab sheets are due tomorrow.

Physical Science:  Today in class we went over section 1 & 2 again of chapter 17.  We also went over the first 10 elements and found out their numbers of protons, neutrons and electrons.  Homework is to find the number of protons, neutrons and electrons for elements 11-20

Science:  Today in class we took a test over chapter 9.  Homework was to finish the chapter 10 vocabulary in the composition book.

Physical Science:  Today in class we began our discussion of chapter 17 section 1 & 2.  Homework was to find out the number of protons, neutrons and electrons for elements 1-10.

ex.  Magnesium (Mg) has an atomic number of 12 and an atomic mass of 24.3.  To find the number of protons, neutrons and electrons do the following:

Atomic Number = # of protons

Atomic Mass = # of protons and neutrons

The atom is electrically neutral so it must have the same number of positive charges and negative charges.  So the # of electrons are the same as the protons.  To find the number of neutrons take the atomic mass and round to the nearest whole number and then subtract the atomic number from it.

Atomic Mass = 24.3 (round to 24)

subtract 12 from 24 and your # of neutrons is 12.

Magnesium (Mg)

P=12    N=12   E=12

Science:  Today we went over the workbook pages for chapter 9.  Don’t forget the test is tomorrow.  Be sure to print out and complete those study guides.

Physical Science:  Today we finished up a test from Friday.  Homework is chapter 17 vocabulary added to the composition book.

Science:  Today students worked on chapter 9 workbook pages.  They are due tomorrow.

Physical Science:  Student worked on some worksheets today.  They are due tomorrow.

Science & Physical Science:  Students went to the computer lab today and completed a scilinks worksheet.

Science & Physical Science:  Students went to the computer lab today and completed a scilinks worksheet.

1. Define element and pure substance.
2. What is a metal, nonmetal and metalloid?
3. Define compound.
4. What are physical properties of compounds?
5. Define reactivity and identify whether it is a physical or chemical property.
6. How do compounds and elements differ?
7. What are two ways to break down compounds?
8. List some common compounds in industry.
9. List some common compounds in nature.
10. Define mixture.
11. Are mixtures chemical or physical change?
12. What are common ways to separate mixtures?
13. Describe ratios and mixture.
14. What is a solution?
15. How are solutes and solvents related?
16. Will light scatter in a solution?  Why?
17. What is the difference between concentrated and dilute concentration?
18. How is solubility related to temperature in a liquid?  What about a gas?
19. How can you dissolve solids faster in a liquid?
20. What is the difference between a suspension and a colloid?
21. What are examples of a suspension and a colloid?
22. Can colloids be separated out by filtration?  Why?
23. What is neon gas?
24. According to the graph on page 247 what is the difference between sodium chloride’s solubility and sodium nitrate solubility at 80 degrees Celsius?
25. According to the graph on page 247 what is the difference between cerium sulfate’s solubility as temperature increases and sodium nitrate as temperature increase?