Thursday, September 30, 2004

Lesson 11

Classifying Elements
Click next to this if you want to learn a little about the periodic table (I know we haven't started it yet but... it should be fun anyway)

Lab Investigation:

Our lab investigation today helped us understand some of the physical properties of matter.

Incase you had a hard time copying down today's notes here they are... your welcome!!!

Classifying Elements: Lab Investigation Lesson 10

Topic: Lab: Classifying Elements

Materials Needed: Lab kit for classifying elements

1. Take up homework – pg. 47 # 1-4
2. Read page 48 with class (review lab)
3. Must hand in labs by Monday and Quiz is on Monday (particle theory of matter – states of matter and classifying elements)
4. Complete Lab - Homework – pg. 49 #1-2
5. Upcoming – worksheet on Metals (pg. 50) and testing for elements worksheet.


Classifying Elements

Elements can be sorted into various groups according to similarities between various elements.

In our lab investigation you discovered different Elements have different physical properties including:

Colour Lustre Malleability Density Magnetism Electrical Conductivity

These distinctions help us figure out what groups or families each element belongs to.
Pg. 50 Table 1 and 2 Text.

Metals all share similar properties:
Conduct Electricity
Are easily magnetized
Solid at room temperature
Silvery/copper/gold colours

Non-metals also share similar properties:
Not very dense
Dull (not much luster)
Insulators (do not conduct electricity)
Not attracted by magnets
Gas or solids at room temperature

Uses for Metals and Non Metals

Make a chart to determine all of the possible uses you can think of for non-metals and metals include at least 10 uses.

Wednesday, September 29, 2004

Lesson 10


Today we looked a little deeper into the eyes of Niels Bohr's Atomic Model - cool eh??

We discussed the electrons, protons and neutrons and will continue with that discussion tomorrow.

Once we are done we will be investigating all of the different properties of the atoms by conducting several tests to determine the differences amongst atoms.

Your course pack will need to be used tomorrow for the lab on page 30. You will be recording your observations and making some conclusions about different types of atoms and particles.

read Text pg. 46 and 47. Complete pg. 47 questions 1-4
Tomorrow's lab can be found on page 48 and 49 of your text.

Tuesday, September 28, 2004

Lesson 9

Particle Theory of Matter Lab.

Today you were to look at the different experiments that were carried out in class and answer some questions relating to particle theory of matter regarding various states of matter.

For example:

In the balloon experiment you saw the balloon inflate when you put the balloon and flask in hot water. Why?

We discussed the way the particles move away from eachother when they are heated and spread to fill the entire area of their container.

But what particles were in the flask to begin with? It was just air right?

Wrong... air is composed of many particle like oxygen, nitrogen, and carbon dioxide

Monday, September 27, 2004

Lesson 8


Here is a great website to help you sort out your homework on determining what particles will look like when they are in various states of matter:

To help prepare you all for the periodic table I have found an awesome game for you to play online. Give it a try and let me know if you can beat my high score. (I finished it with only 2 balls)

Complete assigned reading - pg. 23-25 in course pack
Complete worksheet
Finish diagrams from the board notes

Click here for Board Note on States of Matter

Thursday, September 23, 2004

Lesson 7

Reveiw for Quiz on Monday

Here are the topics you should know for Monday's quiz:

1. Density calculations -
Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 101.0 g. From this information, calculate the density of mercury.

2. Volume calculations -
What volume of silver metal will weigh exactly 100.0 g. The density of silver is 10.5 g/mL.

3. Mass calculations -
Find the mass of 1020.0 mL of benzene. The density of benzene is 0.8765 g/mL.

4. Physical/ Chemical Properties

A snow man turning to water is a physical or chemical property? What is this property called?

5. Physical/ Chemical Changes

Hydrogen making a popping sound and igniting is a physical or chemical change? What is this change called?

Good luck.

Also review your definitions for particle theory of matter.

Wednesday, September 22, 2004

Lesson 6

Density and Particle Theory of Matter:

The Density Quiz is on Monday and you should be familiar with some conversions (cm to m, g to kg, L to ml).

Remember that:
1. all matter is made up of tiny particles
2. all particles of the same substance are the same particles (eg. gold is all gold, and water is all water - not a mixture)
3. the particles in matter are separated by space
4. the particles in matter attract one another
5. the particles in matter are always in motion

Remember to complete your examples today for the different CLASSIFICATION OF MATTER:

Phase, Homogeneous, Heterogeneous, Pure Substance, Impure substance.

Course Pack pg. 16. - for all of you that left in a hurry today!

Tuesday, September 21, 2004

Lesson 5

Hey Everyone!

Hope the lab writing is going well...

Please remember to complete your line graph by tomorrow and that the DEADLINE is Thursday!!!!

The best place to get information on the line graph is on page 555 of your wonderful text. Remember you are plotting three points for volume and mass for water, and the same for the rubber stopper.

Look at your marking sheet for further information on how this lab will be assessed!
Density Marking Scheme Document

Monday, September 20, 2004

Lesson 4


Here is a great website for practising and learning about density.


C.P. pg. 17 (finish lab if you are away - phone learning partner to get their results)

C.P. pg. 18 - density questions.

Sunday, September 12, 2004

Lesson 3

Here is a good review for States of Matter!

States of Matter

Lesson 2

The following is a review for your quiz for Monday September 20, 2004. Please complete it on your own time and feel free to email me with any on SATURDAY OR SUNDAY. If you have questions during the week, make an appointment to see me at school.

Some of the material will look a little strange so I'll also put a link to download this review as well.
Chemistry Quiz Review
Science, Gr. 9
Atoms & Elements Unit

Unit 3 Review

A. Measurement & Metric Conversions

1. Convert the following:

8.2034 mJ = ____________ cJ 88.45 cL = ____________ uL

0.09 cm = ____________ mm 4096 B = ____________ kB

0.0476 kJ = ____________ cJ 1 100 000 mL = ____________L

B. Particle Theory of Matter

1. Draw an ice cube in its solid, liquid, and gaseous state, using the particle theory:




2. There are five different names for what happens when a substance changes state. Draw arrows between each state of matter with the name for the change (both directions!).

Solid Liquid Gas


C. Physical & Chemical Properties and Changes

1. Show that you understand the following properties of matter BY READING THE DEFINITION IN YOUR NOTES AND EXPLAINING IT IN YOUR OWN WORDS:

State Malleability

Crystal shape Solubility

Viscosity Combustibility (chemical)

Reacts with acid

2. What type of (physical or chemical) change occurs:

a) mixing salt and pepper ________________

why: _________________________________________________________________________

b) burning a log ________________

why: _________________________________________________________________________

d) demolishing a car ________________

why: _________________________________________________________________________

e) baking a cake ________________

why: _________________________________________________________________________

C. Mixtures
1. Complete the table: (Use your notes!)

Mixture Type
Explain what this mixture is
Two examples




mechanical mixture





D. Elements and the Periodic Table

1. Use the periodic table to complete these tables:
Element name
Atomic #
# of Protons



Element name
Atomic #
# of Protons


F. Chemical Formulas

1. Complete this table

Name of Substance
Chemical Formula
Compound or Element?
Elements present
How many atoms of each element?
helium gas

iron (II) sulfate
FeS04 - 5H2O

iron (II) nitrate

sulfur trioxide

G. Models of the Atom, Elements and Isotopes

1. Draw an atom with 7 protons, 7 neutrons, 7 electrons. Label all parts, including the nucleus.
Label the electron shells (K, L, M)

What is its overall charge? _______ What element is it? __________
What is the full isotope name? ____________

Calculate the atomic weight.

2. Draw an atom with 1 proton, 2 neutrons, and 1 electron. Label all parts, including the nucleus.
Label the electron shells (K, L, M)

What is its overall charge? _______ What element is it? __________
What is the full isotope name _________

Calculate the atomic weight.

H. Density

1. What does density mean?

2. Why does a diet pop float, and a regular pop sink?

3. What is the equation for density, volume, and mass?

d =

V =

M =

4. What is the density of an unknown metal that is 35 cm3 in volume, and 225 g in mass?

5. Water fills a container 200 mL in volume, and has a density of exactly 1 g/ml. What is its mass?

6. A block of silver has a density of 10.5g/cm3. What is the mass of a block 3 cm x 3 cm x 3 cm?