Physical and Chemical Changes

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Physical and Chemical Changes
11/24/2013
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2
Todays Warmup

• The Elements
• by Tom Lehrer
• Learn and sing this song (from memory) to the
  class for a free 100 daily grade in the
  gradebook!
• http//www.privatehand.com/flash/elements.html

3
Lab Notebook Check

• You are looking for
• Notebook covered and decorated (if not, its an
  automatic 1)
• Table of contents up-to-date (Ecological
  Succession)
• Notes neat and up-to-date
• At least two Mustang Science stamp this grading
  period
• Must have Cornell Notes summaries for a 3
• Remember 3WOW! 2Good 1Needs work 0
• Draw line in Table of Contents for 2nd 6-wks!!!

4
Todays Warm-Up

• The amazing burning dollar bill!

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Todays Warm-Up

• Snow in October, in East Texas?!?

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Physical vs. Chemical Change
Notes
Questions Vocabulary words Formulas Main
Ideas Possible Test Questions Key Concepts
Notes
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Summary of the notes and information learned
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Today's Definitions

• In your lab-book on the left side of your Cornell
  Notes page Define the following terms (found on
  page 344 of your text).
• physical change
• chemical change
• product
• reactant

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Today's Objectives

• Warm-Up
• Vocabulary
• Physical vs. Chemical Demos
• Physical vs. Chemical Notes
• Poster Activity
• Rock Cycle Song/BrainPop
• CPS Quiz
• IPC Worksheet/Homework

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Today's Demos

• Physical changes vs. Chemical changes
• The three little pigs (papers)
• The Whoosh bottle

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Physical VS Chemical Changes

• Changes in matter are constantly occurring around
  us.
• These changes are either physical or chemical
• Eating is a great example of both. It involves
  both physical (chewing) and chemical (digestion)
  changes

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Physical VS Chemical Changes

• Physical changes- form or appearance changes but
  composition stays the same
• evaporation, condensation, freezing
• Changes are to size, shape, state but the
  chemical composition of the substance remains the
  same

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Physical VS Chemical Changes

• Chemical changes- change the chemical composition
  of the substance
• burning changes wood to ash, smoke, gases
• Chemical change involves chemical reactions-
  molecular bonds are broken and reformed to create
  new substances reactants ? products
• The new substances have different chemical
  properties than the original
• Chemical changes are not easily reversed

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Evidence of Chemical Change
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Physical Chemical Changes Lab

• Work with lab partner (groups of 2)
• Listen to and read all directions before
  beginning the lab WEAR SAFETY GLASSES
• Qualitative data is descriptive, written
  information
• Be sure and use a clean stir stick for each
  sample
• Turn in lab report to class bin when complete

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Poster Activity- Physical Chemical

• Work with lab partner (groups of 2)
• Create 1 poster showing physical changes
• Create 1 poster showing chemical changes
• See rubric and self-grade beforeturning in to bin

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The Rock Cycle- natural changes

• The rock cycle is an excellent naturally
  occurring example of both physical and chemical
  changes.
• BrainPop!

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The Rock Cycle- natural changes
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The Rock Cycle- natural changes
physical change
chemical change
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Physical vs. Chemical Change
Questions Vocabulary words Formulas Main
Ideas Possible Test Questions
1. CPS Quiz! 2. Homework
Summary of the notes and information learned
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Make it a great day Mustangs!