Bell Ringers

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8/27/13

8/28/13

• Watch the safety rap video and record all of the safety procedures that you can identify.

Bell Ringer 8/29

1. If a laboratory fire erupts the first thing you should do is?

2. If you get acid on your skin, you should begin washing it off immediately with….

3. True/False – chipped or cracked glassware is ok to use?

Bell Ringer 8/30

• Write a couple of sentences relating these two videos to what we have been discussing this week. How do they make you feel about moving forward with labs? How important is lab safety?

Bell Ringer 9/3

Bell Ringer 9/4

• Define Chemical and Physical Properties from the video.

Bell Ringer 9/5

• Describe the difference between a physical and chemical change.

Bell Ringer 9/6

-Give 2 examples of physical changes:-Give 2 examples of chemical

changes:

DO NOT USE THE EXAMPLES GIVEN IN YOUR NOTES

Which mixture is heterogeneous and why (think carefully)?

A B

4 Pics 1 Word

Bell Ringer 9/10

• What physical properties allow you to separate the salt and sand? (think about the two substances interaction with water)

Bell Ringer 9/11

• What two separation methods did most groups use to separate the sand and salt?

Word Bank

Evaporation, Magnetism, Filtration, Distillation, and Chromatography

Bell Ringer 9/17Draw and complete the table

Subatomic Particle Charge Location (Inside or Outside the nucleus)

Electron

Proton

Neutron

Paper Slide Timeline• Title Page with all of the names of your groups• Dalton, Thomson, Rutherford, Bohr, Moseley, Schrodinger• Only a visual representation, a year, and the name on the

slide.• You will explain the model and/or contribution with

words on the video.• You need to know what the scientist did, no reading

directly from notes.• Put your name on the back of the slide• It has to be done by the end of class so work efficiently

Bell Ringer 9/18

• In complete sentences compare and contrast Bohr and Rutherford's concept of the Nitrogen atom.

Bell Ringer 9/19

• How many protons, neutrons and electrons are in the elements?

Bell Ringer 9/20How many protons, neutrons and electrons are in the element?

Bell Ringer 9/24

• What is an ion?• What is an isotope?

Bell Ringer 9/26

• What is a trend?• What is a column?• What are rows?

Bell Ringer 9/27An isotope of mercury has 80 protons and 120 neutrons. What

is the mass number of this isotope?F)80G)120H)200J)201Which of the following is TRUE about Nickel 59?F) 28 neutronsG) 28 protonsH) 31 electronsJ ) 59 neutrons

Bell Ringer 9/30• You do not have to write this down today.