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MATTER

All notes for unit 2: Matter. Updated for each lesson.
by

Veronica Keefer

on 6 November 2013

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Transcript of MATTER

MATTER
CATALYST
Open to page 32 in your textbook.
While you are waiting, respond to the note in your notebook.

Today we will begin our first CHEMISTRY unit!
Copy the definition for chemistry into your notebook.
What is matter?
Matter is anything that has
mass and volume.
mass
volume
the amount of space a substance takes up.
how much of something there is
(the ability to resist force!)
Sooo... hold on. Don't mass and volume seem very similar?
Not really! Let's look at an example.
same volume,
different mass.
different volume,
different mass.
Is Air matter?
Does it have volume?
Does it have mass?
Let's test it out!
Question:
How can we prove if air and electricity are matter?
Is it Matter Lab!
Research:
Our background knowledge about what matter is.
Hypothesis:
Based on what you know about matter and about air and electricity make a prediction in the form of an I think ______ because ____.
Test:
1. We will measure the mass of a balloon without air, blow it up and measure it with air.
We will measure the mass of an electric cord unplugged and then measure the mass of an electric cord plugged in.
2. We will measure the masses of both in grams.
3. We will make sure the balloon is still before we measure its mass.
We will tape down the sides of the electric cord so the same amount is weighed both times.
Data:
mass without
air/electricity
mass with
air/electricity
balloon
electric cord
Written observations:

Analysis:
Does air have volume?
How do you know?

Does air have mass?
How do you know?

Does electricity have volume?
How do you know?

Does electricity have mass?
How do you know?
Revise:
Write a new hypothesis about whether or not air and electricity are matter in the form of an I think ________ because ______ statement.
CATALYST
1. Find an object in the room and determine whether or not it is matter.

2. Write it down in your notebook.

3. You will have five minutes after the bell rings to write down as MANY things as you can to DESCRIBE your object.
Properties of Matter
Properties of matter DESCRIBE what matter is like.
There are TWO types of properties:
Physical Properties
Chemical Properties
PHYSICAL PROPERTIES
what does the matter look like? smell like? feel like?
There TWO types of Physical Properties!!!
intensive physical properties
will always be true, no matter how much matter we have!
extensive physical properties
will CHANGE depending on how much matter we have!
"inside"
ex=not anymore!
EXAMPLES
intensive
the length of a ruler
extensive
the luster (shininess) of a coin
intensive
more
Make a chart in your notebook (intensive on one side and extensive on the other) and fill it in as we go through some other examples...
color
length
luster (shininess)
texture
mass
density
ductility/flexibility
melting point
volume
magnetism
electric conductivity
reflectivity
Now go BACK to your catalyst list....
AND CLASSIFY each word or phrase you used to describe you object as either intensive or extensive.
CATALYST
Reflect on the poster on the board.

What do you think this means?

Do you agree? Why or why not?
how we describe matter with our five senses (looks like, feels like, smells like, etc)
intensive
extensive
CHEMICAL PROPERTIES
describe matter's ability to change its composition
(to change what it is)
For example:
flammability
how easily something burns
reactivity
how easily it reacts with another substance
corrosiveness
how easily it is broken down by another substance (ex: rusting)
PH
how acidic or basic something is
Let's try out some examples.
Dish Soap
Paper
Baking Soda
observe some physical properties of dish soap.
TEST IT OUT!
observe a chemical property of dish soap.
observe a chemical property of paper.
observe a chemical property of baking soda.
observe some physical properties of paper.
observe some physical properties of baking soda.
TEST IT OUT!
TEST IT OUT!

This means independent of ME and your CLASSMATES!

Use this as practice as if you were taking a test and use your notes only if you absolutely MUST!!
CATALYST
What do you think of Physical Science?
How is Ms Keefer doing so far this year?

Now is your chance to let me know!!
Student Surveys are TODAY! They are completely anonymous so please be honest, so we have an even better class this next nine weeks! :)

Clear you desk off, find a pencil (if you can), and get ready to take our student surveys!
Introduction to Chemical and Physical Changes....
Physical Changes
Physical Changes may change how a substance LOOKS or FEELS, but will not change WHAT IT IS.
Physical Changes deal with energy and states of matter, but do not change the identity of the substance.
For example,
if I tear a piece of paper in half, it is still made of paper.
If I crumple up a piece of paper, it is still made of paper.
CHEMICALLY, THE COMPOSITION DOES NOT CHANGE!!
Chemical Changes
Chemical changes mean that after the change takes place, you have a new substance.
After a chemical change, you will see DIFFERENT properties than the substance you started out with.
For example, when you burn logs, you end up with charcoal. What new properties do you observe about charcoal that are different from wood?
The ingredients you put into the oven react chemically to create a cake. What new properties do you observe about a cake that are different from its ingredients?
Chemical or Physical?
Fermenting grapes to make wine.
CHEMICAL
Chemical or Physical?
Compressing a car at a junk yard.
PHYSICAL
Chemical or Physical?
Stones being worn down into sand.
PHYSICAL
Chemical or Physical?
Combustion engine in a car produces exhaust.
Let's look at a movie clip and see what we can find...
1. Split your paper in half with Chemical Change on one side and Physical Change on the other.

2. As we watch the movie, raise your hand if you think you see a chemical or physical change and we will pause it and identify the type of change.
CATALYST
Get out your Independent Practice from last class.
We will review our answers together.
Please be prepared to share. :)
pg 64 #s 32, 33, 34
LAB ACTIVITY!
Is ice melting a chemical or physical change?
States of Matter
different forms that matter can take.
Solid
Liquid
Gas

Plasma
definite shape
definite volume
does not flow easily
particle diamgram
indefinite shape
definite volume
flows easily
particle diagram
indefinite shape
indefinite volume
flows easily
takes the shape of its container
takes the shape of its container
expands and contracts to fit container
particle diagram
freely moving particles that generate an electric or magnetic charge
ex: LIGHTNING
http://www.chem.purdue.edu/gchelp/atoms/states.html
Phase Changes
when matter changes from one state to another.
Melting
Evaporation
Condensation
Freezing
Sublimation
Deposition
solid ------> liquid
liquid ------> gas
gas ------> liquid
liquid ------> solid
solid ------> gas
gas ------> solid
Let's Discuss!!!
MAKE A POSTER OR RAP!
Include:
All states of matter. (10pts)
Similarities and differences between states of matter. (10pts)
All phase changes. (10pts)
Examples of phase changes. (5pts)
Examples of states of matter. (5pts)
CREATIVITY! (10pts)
total: 50pts
CATALYST
Fill out the two graphic organizers to review the information we covered TWO classes ago.
SOLID
LIQUID
evaporation
GAS
condensation
melting
freezing
sublimation
deposition
SOLID
LIQUID
GAS
definite shape
definite volume
indefinite shape
indefinite volume
flows easily
does not flow easily
SAME SUBSTANCE!
WRITE A STORY.
Now you have lots of experience with both chemical and physical properties as well as chemical and physical changes. Write a story in which you mention examples of each of these.

Choose two colors:
One for chemical, one for physical.
Underline Properties and Circle Changes
EXAMPLE.
Should be creative and about 3 paragraphs.
HAVE FUN!!!!
yours will be longer.....
Suzie Q drove to the store to buy some ice cream. She picked a carton that was blue and orange. When she got home, she noticed some water droplets had formed on the outside of the carton.
She scooped herself some ice cream into a glass bowl. She ate it and it tasted like chocolate. YUM!
include AT LEAST two examples of each
CATALYST
copy this chart into your notebook and fill it out based on your research in Section 2.1.
MATTER
pure substance
mixture
homogeneous mixture
heterogeneous mixture
element
compound
PUT IT IN YOUR OWN WORDS!
We know how to identify a particle diagram as solid, liquid, or gas....
solid
liquid
gas
Can we identify as element, compound, or mixture?
element
compound
compound
element
mixture
mixture
heterogeneous
What about some REAL LIFE examples??
mixed nuts
milk
vomit
blood
saltwater
birdseed
Everyone is assigned a diagram.
Answer the questions below in complete sentences.
1. Is it a pure substance or a mixture?
2. Is it an element or a compound?
Is it a homogeneous or heterogeneous mixture?
3. Is it a solid, a liquid or a gas?
4. Explain how you know.
**Challenge Q: Think of a real life example that would fit for this diagram!
Remember, I should be able to understand your answer without seeing the question!
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