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{ Physical vs Chemical Changes Is there a new substance? Matter can change. The changes are categorized as either physical change or a chemical change.

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Presentation on theme: "{ Physical vs Chemical Changes Is there a new substance? Matter can change. The changes are categorized as either physical change or a chemical change."— Presentation transcript:

1 { Physical vs Chemical Changes Is there a new substance? Matter can change. The changes are categorized as either physical change or a chemical change.

2 Physical Changes Examples: 1.Melting 2.Boiling 3.Breaking 4.Cutting 5.Dissolving A physical change is a change where the substance may change its appearance but the particles of the substance are still the same. Ex: Ice<>Water<>Steam

3 Physical Changes Examples: 1.Melting 2.Boiling 3.Breaking 4.Cutting 5.Dissolving  Appearance changes but substance does not

4 Physical Changes Examples: 1.Melting 2.Boiling 3.Breaking 4.Cutting 5.Dissolving  Appearance changes but substance does not

5 Physical Changes Examples: 1.Melting 2.Boiling 3.Breaking 4.Cutting 5.Dissolving  Appearance changes but substance does not

6 Physical Changes Examples: 1.Melting 2.Boiling 3.Breaking 4.Cutting 5.Dissolving  Appearance changes but substance does not

7 Physical Changes Examples: 1.Melting 2.Boiling 3.Breaking 4.Cutting 5.Dissolving  Appearance changes but substance does not

8 Chemical Changes Examples: 1.Produces bubbles 2.Turns cloudy 3.Temperature change 4.Colour change 5.Change in smell or taste  Substance change! In a chemical change, the original substances react and form one or more DIFFERENT substances that have different properties. Ex: Iron and Oxygen react to make rust (iron oxide)

9 Chemical Changes Examples: 1.Produces bubbles 2.Turns cloudy 3.Temperature change 4.Colour change 5.Change in smell or taste  Substance change!

10 Chemical Changes Examples: 1.Produces bubbles 2.Turns cloudy (or a precipitate is formed) 3.Temperature change 4.Colour change 5.Change in smell or taste  Substance change!

11 Chemical Changes Examples: 1.Produces bubbles 2.Turns cloudy 3.Energy change (temperature or light) 4. Colour change 5. Change in smell or taste  Substance change!

12 Chemical Changes Examples: 1.Produces bubbles 2.Turns cloudy 3.Temperature change 4.Colour change 5.Change in smell or taste  Substance change!

13 Chemical Changes Examples: 1.Produces bubbles 2.Turns cloudy 3.Temperature change 4.Colour change 5.Change in smell or taste  Substance change!

14 Chemical Reactions  Equations Reactants Products

15 Melting butter for popcorn

16 A bicycle rusting

17 Frying an egg

18 Dyeing my hair blond

19 Making salt water to gargle with

20 Cream being whipped to top a sundae

21 Melting ice cream

22 Boiling water for tea

23 Burning toast

24 Shredding old documents

25 Acid rain wears away rock

26 Dropping and breaking a test tube

27 Firefly glowing

28 Dog tearing up your homework

29 Dog eating (digesting) your homework

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