Quiz on Atom Notation
Stamp homework sheet for completeness
Go over questions on Radioactive Decay homework sheet
Decay lab with pennies
Students worked in groups of four and made graphs.
Friday, February 25, 2011
Wednesday, February 23, 2011
Wednesday, Feb 23, 2100
Quiz on atom notation
Went over and explained quiz
Continued going over decay equations.
Asked for answers to homework - students had not done it.
Had students read the hand out. Then had the students pair up and take turns telling their partner the important ideas of the worksheet - without referring to worksheet.
Went over the ideas they stated in class.
Handed out and went over next set of worksheets.
Did several examples of alpha and beta decay.
Students wrote decay equations on board for the example problems.
Went over their solutions.
Handed out practice in radioactivity for homework due tomorrow
Went over and explained quiz
Continued going over decay equations.
Asked for answers to homework - students had not done it.
Had students read the hand out. Then had the students pair up and take turns telling their partner the important ideas of the worksheet - without referring to worksheet.
Went over the ideas they stated in class.
Handed out and went over next set of worksheets.
Did several examples of alpha and beta decay.
Students wrote decay equations on board for the example problems.
Went over their solutions.
Handed out practice in radioactivity for homework due tomorrow
Tuesday, Feb 22, 2011
Had students write what I could have done to better prepare them for the atoms test.
Handed back and went over the test.
Started radioactivity. Went over first handout on expanding the atom notation and types of radiation.
Assigned the two review questions at the end of the worksheet for homework.
Handed back and went over the test.
Started radioactivity. Went over first handout on expanding the atom notation and types of radiation.
Assigned the two review questions at the end of the worksheet for homework.
Thursday, Feb 17, 2011
Had students get into study groups and review worksheets for test.
Gave Atoms Test
Gave Atoms Test
Wednesday, Feb 16, 2011
Students redid counting atoms worksheet and vocab worksheet
Went over the answers in their study groups.
Made laptops available for Quia
Went over the answers in their study groups.
Made laptops available for Quia
Tuesday, Feb 15, 2011
Student chose study groups
Element symbol and counting atoms flashcards
Made laptops available for Quia
Element symbol and counting atoms flashcards
Made laptops available for Quia
Thursday, February 10, 2011
Thursday, Feb 10, 2011
Check for textbook covers
Check on Quia quizzes
Go over Room Scavenger Hunt and evacuation meeting place.
Go over Homework from Chem Worksheet 1
Go over Element Symbols on wall
Hand out Chem Worksheets 2a 2b 2c
Quick review of worksheets
Had students try to match the element name with the place.
Demo on balloon kebabs
Went over Chem Worksheet 2d on subscripts and superscripts.
Assigned last problem for homework, as well as doing the Quias. Told students about new Quia activity on element symbol/name matching.
Check on Quia quizzes
Go over Room Scavenger Hunt and evacuation meeting place.
Go over Homework from Chem Worksheet 1
Go over Element Symbols on wall
Hand out Chem Worksheets 2a 2b 2c
Quick review of worksheets
Had students try to match the element name with the place.
Demo on balloon kebabs
Went over Chem Worksheet 2d on subscripts and superscripts.
Assigned last problem for homework, as well as doing the Quias. Told students about new Quia activity on element symbol/name matching.
Wednesday, February 9, 2011
Wed Feb 9, 2011
Hand back Course Expectation Quiz
Students make predictions on what will happen
Demo - Grapes and charged rod
Demo - Grapes and magnet
Hand out Chem sheet 1A - Element symbols
Go over
Students randomly choose element and draw element symbol
Room Scavenger Hunt
Show meeting place outside for emergency evacuation
Homework: Do back side of Chem Sheet 1A - Element Symbols
Do Quias if you have not yet scored 100%
Students make predictions on what will happen
Demo - Grapes and charged rod
Demo - Grapes and magnet
Hand out Chem sheet 1A - Element symbols
Go over
Students randomly choose element and draw element symbol
Room Scavenger Hunt
Show meeting place outside for emergency evacuation
Homework: Do back side of Chem Sheet 1A - Element Symbols
Do Quias if you have not yet scored 100%
Tuesday, February 8, 2011
Tues Feb 8, 2011
Start with a BULA! and Say Something Nice to Your Partner
Collect Parent Notification Forms
Collect Course Expectation Forms
Check for Textbook Covers
Those that have covers don't need to bring their books to class until I request them.
Those without covers by Wednesday will stay after school in my classroom and put on a cover.
Quiz on Expectations
Went over Quiz
Journal:
Table of Contents:
Demo - Magic Jar
Demo - Charged strip and water
Demo - Charged straw on pop bottle
Demo - 2x4 and charged ebonite rod
Content:
Demo - Magic Jar
Description - When you turn it upside down, the plastic stays on
Reason - Air Pressure
Main Ideas: Air is made of matter
The air we breathe is about 20% oxygen O2 and 80% nitrogen N2
At room temperature these exist as 2 atom molecules and are in the gaseous state
All matter is made of atoms, tiny particles
Description - When you remove the plastic, the water stays in
Reason - cohesion and surface tension
Cohesion - water molecules are attracted to each other
That is why they form drops
co - together or same coexist, cohabit, coagulate (blood clots), coalesce (grow together, unite, join)
hesion - stick
Adhesion - water molecules are attracted to some other material
Mensicus in graduated cylinder - example of adhesion, water more strongly attracted to glass
If you did the same with mercury, the meniscus would be the opposite way since cohesion greater than adhesion.
Show picture of cohesion and surface tension. Surface molecules are pulled down. This makes a tight surface that bugs can walk on.
Demo - Stream of water attracted to charged strip or rod
Reason - Electrical nature of matter
Main Idea - Atoms and molecules have electrical properties
Picture of an atom is that it has a central, positively charged nucleus made of positively charged protons and neutrons that have no charge. (Neutron in a bar joke)
Each of these "nucleons" (particles in the nucleus) has about the same mass.
Surrounding this nucleus are the electrons, which have much less mass than the protons or neutrons. These electrons are negatively charged. Most matter is neutral because there are about the same numbers of positive charges (protons) - pro- for positive
as electrons (negative charge)
Water is the "Mickey Mouse" molecule of chemistry. The chemical formula for water is H2O meaning there are two hydrogen atoms and one oxygen atom in each molecule of water. But...the atom has ears, it is not in a straight line. The hydrogen ears are the positive end of the molecule and the oxygen head is the negative end. In the stream of water, the water can rotate so the opposite charge is closer and attracted to the charged strip.
A strip of the opposite charge would also attract the water, the water would just rotate the other way.
Demo - Charged straw on pop bottle
Demo - 2x4 and charged rod
Demo - Balloon "sticks" to wall
Main Idea - Charge polarization and the electrical nature of matter. Even neutral matter can be attracted to charged objects.
The atoms in the wood can't rotate but the electron cloud can shift a bit in the molecules making the opposite charge closer.
Demo - Van de Graaff Generator - hair stands on end
Main Idea - Like charges repel
The extra electrons want to get as far away as possible from each other.
Discharge - provides a path to get even farther away
HW do both Quias
Students who do not do them and get at least 90% will stay after school in my room and work on them
Collect Parent Notification Forms
Collect Course Expectation Forms
Check for Textbook Covers
Those that have covers don't need to bring their books to class until I request them.
Those without covers by Wednesday will stay after school in my classroom and put on a cover.
Quiz on Expectations
Went over Quiz
Journal:
Table of Contents:
Demo - Magic Jar
Demo - Charged strip and water
Demo - Charged straw on pop bottle
Demo - 2x4 and charged ebonite rod
Content:
Demo - Magic Jar
Description - When you turn it upside down, the plastic stays on
Reason - Air Pressure
Main Ideas: Air is made of matter
The air we breathe is about 20% oxygen O2 and 80% nitrogen N2
At room temperature these exist as 2 atom molecules and are in the gaseous state
All matter is made of atoms, tiny particles
Description - When you remove the plastic, the water stays in
Reason - cohesion and surface tension
Cohesion - water molecules are attracted to each other
That is why they form drops
co - together or same coexist, cohabit, coagulate (blood clots), coalesce (grow together, unite, join)
hesion - stick
Adhesion - water molecules are attracted to some other material
Mensicus in graduated cylinder - example of adhesion, water more strongly attracted to glass
If you did the same with mercury, the meniscus would be the opposite way since cohesion greater than adhesion.
Show picture of cohesion and surface tension. Surface molecules are pulled down. This makes a tight surface that bugs can walk on.
Demo - Stream of water attracted to charged strip or rod
Reason - Electrical nature of matter
Main Idea - Atoms and molecules have electrical properties
Picture of an atom is that it has a central, positively charged nucleus made of positively charged protons and neutrons that have no charge. (Neutron in a bar joke)
Each of these "nucleons" (particles in the nucleus) has about the same mass.
Surrounding this nucleus are the electrons, which have much less mass than the protons or neutrons. These electrons are negatively charged. Most matter is neutral because there are about the same numbers of positive charges (protons) - pro- for positive
as electrons (negative charge)
Water is the "Mickey Mouse" molecule of chemistry. The chemical formula for water is H2O meaning there are two hydrogen atoms and one oxygen atom in each molecule of water. But...the atom has ears, it is not in a straight line. The hydrogen ears are the positive end of the molecule and the oxygen head is the negative end. In the stream of water, the water can rotate so the opposite charge is closer and attracted to the charged strip.
A strip of the opposite charge would also attract the water, the water would just rotate the other way.
Demo - Charged straw on pop bottle
Demo - 2x4 and charged rod
Demo - Balloon "sticks" to wall
Main Idea - Charge polarization and the electrical nature of matter. Even neutral matter can be attracted to charged objects.
The atoms in the wood can't rotate but the electron cloud can shift a bit in the molecules making the opposite charge closer.
Demo - Van de Graaff Generator - hair stands on end
Main Idea - Like charges repel
The extra electrons want to get as far away as possible from each other.
Discharge - provides a path to get even farther away
HW do both Quias
Students who do not do them and get at least 90% will stay after school in my room and work on them
Monday, February 7, 2011
Mon Feb 7, 2011
HW due tomorrow:
Hand in signed course expectation form
Hand in signed Parent Notification form
Cover textbook
Do Quia quiz on A1 General Knowledge
Try Quia quiz on Day 1 Review
Quiz tomorrow on Expectations.
Hand out:
Student Profile - Students complete and put in bin for 10 pts
Course Expectation Form
Student and Parent Form for Course Expectations - students return for 5 pts
Parent Notification Form - Students return one signed copy for 10 pts. (Keep the other at home since it has my contact info)
Go over Expectation Form in some detail
Quiz tomorrow on Expectation Form
Hand out Quia Passwords
Assign Quia Quiz on B1 - Skills
Tried showing demos but they were a bit rushed and I didn't finish.
Demo: Magic Jar
Plastic sheet stays due to air pressure
Idea: Air is made of matter - in fact, air is about 20% oxygen and 80% nitrogen
All matter is made of small particles called atoms
Demo: Stream of water is attracted to charged strip
Idea: This shows electrical nature of matter - water is the Mickey Mouse molecule with a plus side (at the ears, hydrogen) and a negative side (at the head, oxygen). The molecule rotates to present the opposite charge to the charged strip.
Demo: straw charged by sweater on plastic bottle. Straw is attracted to finger. Finger has water in it. Idea of charge polarization.
Demo: 2x4 attracted to charge ebonite rod. Also due to charge polarization.
Hand in signed course expectation form
Hand in signed Parent Notification form
Cover textbook
Do Quia quiz on A1 General Knowledge
Try Quia quiz on Day 1 Review
Quiz tomorrow on Expectations.
Hand out:
Student Profile - Students complete and put in bin for 10 pts
Course Expectation Form
Student and Parent Form for Course Expectations - students return for 5 pts
Parent Notification Form - Students return one signed copy for 10 pts. (Keep the other at home since it has my contact info)
Go over Expectation Form in some detail
Quiz tomorrow on Expectation Form
Hand out Quia Passwords
Assign Quia Quiz on B1 - Skills
Tried showing demos but they were a bit rushed and I didn't finish.
Demo: Magic Jar
Plastic sheet stays due to air pressure
Idea: Air is made of matter - in fact, air is about 20% oxygen and 80% nitrogen
All matter is made of small particles called atoms
Demo: Stream of water is attracted to charged strip
Idea: This shows electrical nature of matter - water is the Mickey Mouse molecule with a plus side (at the ears, hydrogen) and a negative side (at the head, oxygen). The molecule rotates to present the opposite charge to the charged strip.
Demo: straw charged by sweater on plastic bottle. Straw is attracted to finger. Finger has water in it. Idea of charge polarization.
Demo: 2x4 attracted to charge ebonite rod. Also due to charge polarization.
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