1.4 physical and chemical changes.notebook · 2019. 9. 23. · 1.4 physical and chemical...

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1.4 Physical and Chemical Changes.notebook 1 September 23, 2019 Warmup Without looking at your notes list 5 physical properties and 2 chemical properties.

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  • 1.4 Physical and Chemical Changes.notebook

    1

    September 23, 2019

    Warmup

    Without looking at your notes list 5 physical properties and 2 chemical properties.

  • 1.4 Physical and Chemical Changes.notebook

    2

    September 23, 2019

    Lab - 10 minutes to finish

  • 1.4 Physical and Chemical Changes.notebook

    3

    September 23, 2019

    Physical and Chemical Changes(p. 28-30 textbook)

    Matter can undergo changes that are either physical or chemical

    Physical Change: the substance may change its appearance but the particles of the substance remain the same.

    Examples:

    Chemical Change: the original substance(s) react to create a new substance or substances that have different properties.

    Examples:

  • 1.4 Physical and Chemical Changes.notebook

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    September 23, 2019

    Physical changes include:

    1. Breaking/tearing (size)ex:

    2. Changes of stateex:

    3. Dissolvingex:

    4. Change in durabilityex:

    5. Change in textureex:

    Physical changes are usually (but not always) easily reversible.

  • 1.4 Physical and Chemical Changes.notebook

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    September 23, 2019

    Evidence of Chemical Change (p.30)

    1. Difficult to reverse

    2. A solid precipitate form in a liquid

    3. New colour

    4. Bubbles (gas) made

    5. Odour change

    6. Temperature change (heating or cooling from the reaction, not an outside source)

  • 1.4 Physical and Chemical Changes.notebook

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    September 23, 2019

    Classwork/Homework:• Finish the lab  due AT THE BEGINNING OF CLASS TOMORROW• Classifying properties and changes worksheet• Textbook p. 30 #1 and 4

  • 1.4 Physical and Chemical Changes.notebook

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    September 23, 2019

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