8th Grade Science

1
8th Grade Science
Do Now
Monday, January 28, 2013

• Tape
• -Do Now page to page 29
• - Frayer Model to page 30
• - Reading to page 31, .
• 2. Copy and answer the following questions.
• 1. How do you know when milk has gone bad?
• 2. How do you know when a nail has rusted?
• 3. How do you know when your food is burnt?

2
8th Grade Science
Todays Schedule
Monday, January 28, 2013

1. Do Now
2. Foldable
3. Physical and Chemical Changes Reading
4. Frayer Model
5. Project

Pre-AP Homework Grade-Level Homework
Poster/PowerPoint/Popplet OR Model due FRIDAY Poster/PowerPoint/OR Model due FRIDAY

Essential Question
Vocabulary
How do we describe and classify matter? What
happens to atoms in a chemical reaction?
Electron Proton Neutron Electron Cloud Electrical
Charge Valence Electron Nucleus Reactivity
3
8th Grade Science
Today we will
Monday, January 28, 2013
8.5(E)  investigate how evidence of chemical
reactions indicate that new substances with
different properties are formed Objective Studen
ts will identify chemical changes in their
everyday life and describe the difference between
physical and chemical changes
4
8th Grade Science
Foldable
Monday, January 28, 2013

• Fold pages 33 and 35 towards each other.
• Cut each page in half

5
8th Grade Science
Foldable
Monday, January 28, 2013

• Label each foldable flap

Physical Properties
Chemical Properties
Chemical Changes
Physical Changes
6
8th Grade Science
Foldable
Monday, January 28, 2013

• 1. Write a definition for physical properties
• 2. Describe 3 examples of physical properties
• 3. Repeat with chemical properties.
• Use Reading on page 27/28 of INB as guide

Describe 3 examples
Chemical Properties
Write definition
Chemical Changes
Physical Changes
7
8th Grade Science
Foldable
Monday, January 28, 2013

• Return to front and add pictures to physical and
  chemical properties

Physical Properties
Chemical Properties
Chemical Changes
Physical Changes
8
8th Grade Science
Physical and Chemical Changes
Monday, January 28, 2013

• 1. Read Physical and Chemical Changes
• 2. With a partner, complete the Frayer Model for
  Physical and Chemical Changes.

Physical Changes
Chemical Changes
9
8th Grade Science
Brain-Pop Video
Monday, January 28, 2013

• Physical and Chemical Changes

10
8th Grade Science
Do Now
Tuesday, January 29, 2013

1. Read the Chemistry story at your table.
2. On your Do Now page, answer the following
   questions.
3. List 2 examples of physical properties in this
   story.
4. List 2 examples of chemical properties in this
   story
5. List 2 examples of physical changes in this
   story.
6. List 2 examples of chemical changes in this
   story.

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8th Grade Science
Todays Schedule
Tuesday, January 29, 2013

1. Do Now
2. Marshmallow Man Lab
3. Finish Foldable

Pre-AP Homework Grade-Level Homework
Poster/PowerPoint/Popplet OR Model due FRIDAY Poster/PowerPoint/Popplet OR Model due FRIDAY h

Essential Question
Vocabulary
How do we describe and classify matter? What
happens to atoms in a chemical reaction?
Electron Proton Neutron Electron Cloud Electrical
Charge Valence Electron Nucleus Reactivity
12
8th Grade Science
Today we will
Tuesday, January 22, 2013
8.5(E)  investigate how evidence of chemical
reactions indicate that new substances with
different properties are formed Objective
Identify examples of chemical and physical
changes.
13
Making your Marshmallow Man

• 1. Insert a toothpick halfway into the flat side
  of one marshmallow to form the body.
• 2. Stick the second marshmallow on the remaining
  end of the toothpick.
• 3. Insert four toothpicks into opposite sides of
  the body to make his arms and legs.
• 4. Place a marshmallow on a toothpick and stick
  half of the toothpick in the body to make the
  head.

This sounds fun!
14
Action 1 Pull

• 1. Pull the left arm of Marvin.
• 2. Observations Describe what happens when you
  pull the marshmallow arm of Marvin.

Pull my arm!
15
Action 2 Chew

• 1. Take off Marvins right arm and chew it.
• 2. Observations What forces are you placing on
  the marshmallow as you chew?
• REMEMBER Only
• record observations
• about your CHEWING,
• not swallowing.

Chomp chomp!
16
Action 3 Digest

• Take Marvins left leg and digest it.
• Observations What is happening as you are
  digesting Marvins leg?

Im yummy!
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Action 4 Pound

• Pound the center of Marvins body.
• Observations What force(s) are you applying to
  Marvin and how is it changing his appearance?

OUCH!
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Action 5 Puncture

• Puncture a hole through Marvins head.
• Observations What force(s) did you apply here
  and how did the marshmallow head react?

But I already have three holes in my head!
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Action 6 Amputate and Boil

• Amputate (cut off) Marvins right leg and
  carefully place it in the boiling water.
• Observations How does the boiling water change
  Marvins leg?

Its HOT in here!!!
20
8th Grade Science
Foldable
Tuesday, January 29, 2013

• Finish Conclusion Questions on Marshmallow Lab
• Write a definition for physical changes
• Describe 3 examples of physical changes
• Repeat with chemical changes.
• Use Reading on page 31 of INB as guide

Chemical Properties
Physical Properties
Describe 3 examples
Chemical Changes
Write definition
21
8th Grade Science
Foldable
Tuesday, January 29, 2013

• Return to front and add pictures to physical and
  chemical properties

Physical Properties
Chemical Properties
Chemical Changes
Physical Changes
22
8th Grade Science
Do Now
Wed./Thurs, January 30 31, 2013
On your Do Now Page, answer Are the following
a physical or chemical change? Digestion Melting D
issolving Burning Rusting Freezing
23
8th Grade Science
Todays Schedule
Wed./Thurs, January 30 31, 2013

1. Do Now
2. Chemical Changes Lab
3. Conclusion Questions
4. Project Work Time

Pre-AP Homework Grade-Level Homework
Poster/PowerPoint/Popplet OR Model due FRIDAY Poster/PowerPointOR Model due FRIDAY

Essential Question
Vocabulary
How do we describe and classify matter? What
happens to atoms in a chemical reaction?
Electron Proton Neutron Electron Cloud Electrical
Charge Valence Electron Nucleus Reactivity
24
8th Grade Science
Today we will
Wed./Thurs, January 30 31, 2013
8.5(E)  investigate how evidence of chemical
reactions indicate that new substances with
different properties are formed Objectives
Identify 5 indicators of a chemical change.
25
8th Grade Science
Chemical Changes Lab
Wed./Thurs, January 30 31, 2013

• At each station.
• Read the instructions
• Perform each experiment carefully
• Record observations
• Answer the questions
• Leave it clean
• Wear your safety goggles

26
8th Grade Science
Project Work Time
Wed./Thurs, January 30 31, 2013
After you finish your lab You should be working
on one of the following, DUE FRIDAY!!! -PowerPoin
t or Poster (Pre-AP Popplet) -Model
Atom -Research Paper Rough Draft
(Pre-AP) -Research
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8th Grade Science
Do Now
Friday, February 1, 2013

• Get out what you are turning in today for the
  project
• Tape the paper you picked up to page .
• 3. On your Do Now page
• Describe 3 pieces of evidence that a chemical
  change has occurred.

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8th Grade Science
Todays Schedule
Friday, February 1, 2013

1. Do Now
2. Quiz
3. Project Check

Pre-AP Homework Grade-Level Homework
Rough draft of Research paper due on Monday. Rough draft of Research paper due on Monday.

Essential Question
Vocabulary
How do we describe and classify matter? What
happens to atoms in a chemical reaction?
Electron Proton Neutron Electron Cloud Electrical
Charge Valence Electron Nucleus Reactivity
29
8th Grade Science
Today we will
Friday, February 1, 2013
8.5(E)  investigate how evidence of chemical
reactions indicate that new substances with
different properties are formed Objectives
Identify 5 indicators of a chemical change.
30
1. With a partner, fill in the table.2. Sources
that may help you -Wed/Thurs Lab Chemical
Changes -Physical and Chemical Changes
Reading -Foldable
8th Grade Science
Evidence of Chemical Change
Friday, February 1, 2013
Observation Drawing Example





31
Recognizing patterns help predict what will
happen next and what can change overtime. Energy
can change forms and transfer from one object to
another
Chemistry
Force Motion
Characteristics of the Universe
understanding that all matter in the universe is
made up of elements
which are described by
and illustrated by
which combine chemically
by recognizing through investigations
made up of

IMPORTANT TERMS
atom nucleus valence
electron Law of Conservation of Mass
proton physical vs
chemical change physical vs
chemical property coefficient
neutron atomic number reactant
subscript
electron product
reactivity electron cloud shell,
orbital, energy level

• What isnt chemistry?
• Why should I care about physical and chemical
  changes in my everyday life?
• Where does matter come from and where does it go
  to if it cant be created or destroyed?
• How would scientists predict the properties of a
  new element where would it fit on the Periodic
  Table?
• What do I have in common with pencil graphite and
  diamonds?
• What would the biosphere be like without the 8
  common elements in contains?

Demonstrating Investigating Describing Interpretin
g Recognizing