Changes to Materials<br />
What is a Solid?<br />(3)<br />(1)<br />A tennis ball<br />A diamond<br />A piece of wood<br />(2)<br />A solid has defini...
What is a Liquid?<br />(4)<br />A liquid has no definite shape, but does have definite volume.<br />
What is a Gas?<br />(5)<br />(6)<br />Sulphur dioxide<br />Carbon dioxide<br />A gas has no definite shape or volume.<br />
Changes to materials can be reversible; <br />such as melting, freezing or evaporating.<br />An ice cube melting<br />(7)<...
Changes to materials can be irreversible; <br />such as burning, rusting or cooking.<br />Gases of carbon dioxide<br />Ash...
What is Physical Change?<br />(9)<br />Water may freeze, melt or evaporate, but it is always water – it has only physicall...
Different Physical Changes<br />(10)<br />(11)<br />(12)<br />(13)<br /> They have changed shape, but have not changed che...
What is Chemical Change?<br />(15)<br />(14)<br />A kernel of corn, if heated changes into popcorn. It cannot be changed b...
Different Chemical Changes<br />(17)<br />(16)<br />(19)<br />(18)<br /> They have changed chemically and cannot be change...
Misconceptions<br />Water disappears?<br />Solids dissolve?<br />(18)<br /><ul><li> Solids melt, not dissolve.
 Water evaporates, not disappears.</li></li></ul><li>Reversible changes to Recycled Materials<br />(19)<br />(22)<br />(20...
<ul><li>Physical changes to materials are reversible.
Chemical changes to materials are irreversible.</li></li></ul><li>References:<br />Image References:<br />Number 1 – Micro...
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  1. 1. Changes to Materials<br />
  2. 2. What is a Solid?<br />(3)<br />(1)<br />A tennis ball<br />A diamond<br />A piece of wood<br />(2)<br />A solid has definite shape and volume.<br />
  3. 3. What is a Liquid?<br />(4)<br />A liquid has no definite shape, but does have definite volume.<br />
  4. 4. What is a Gas?<br />(5)<br />(6)<br />Sulphur dioxide<br />Carbon dioxide<br />A gas has no definite shape or volume.<br />
  5. 5. Changes to materials can be reversible; <br />such as melting, freezing or evaporating.<br />An ice cube melting<br />(7)<br />
  6. 6. Changes to materials can be irreversible; <br />such as burning, rusting or cooking.<br />Gases of carbon dioxide<br />Ash left over from burnt paper<br />(8)<br />
  7. 7. What is Physical Change?<br />(9)<br />Water may freeze, melt or evaporate, but it is always water – it has only physically changed.<br />
  8. 8. Different Physical Changes<br />(10)<br />(11)<br />(12)<br />(13)<br /> They have changed shape, but have not changed chemical substances.<br />
  9. 9. What is Chemical Change?<br />(15)<br />(14)<br />A kernel of corn, if heated changes into popcorn. It cannot be changed back – it has chemically changed.<br />
  10. 10. Different Chemical Changes<br />(17)<br />(16)<br />(19)<br />(18)<br /> They have changed chemically and cannot be changed back.<br />
  11. 11. Misconceptions<br />Water disappears?<br />Solids dissolve?<br />(18)<br /><ul><li> Solids melt, not dissolve.
  12. 12. Water evaporates, not disappears.</li></li></ul><li>Reversible changes to Recycled Materials<br />(19)<br />(22)<br />(20)<br />(21)<br />Recyclable materials can be remade into another product without making a chemical change.<br />
  13. 13. <ul><li>Physical changes to materials are reversible.
  14. 14. Chemical changes to materials are irreversible.</li></li></ul><li>References:<br />Image References:<br />Number 1 – Microsoft 2007 Clipart, retrieved from document clipart “wood”, March 5, 2011<br />Number 2 – Microsoft 2007 Clipart, retrieved from document clipart “diamond”, March 5, 2011<br />Number 3 – Microsoft 2007 Clipart, retrieved from document clipart “tennis ball”, March 5, 2011<br />Number 4 – “water pouring” retrieved March 5, 2011 from http://www.witweightloss.com/fat-burning-foods/top-five-benefits-water-you-should-take-advantage.html<br />Number 5 – “volcano” retrieved March 5, 2011 from http://volcanoes.usgs.gov/images/pglossary/VolcGas.php<br />Number 6 – “smoke stack” retrieved March 5, 2011 from http://www.treehuggerusa.com/greenhouse-gases/index.html<br />Number 7 – Microsoft 2007 Clipart, retrieved from document clipart “ice melting”, March 5, 2011<br />Number 8 – “burning paper” retrieved March 5, 2011 from http://www.dreamstime.com/stock-images-burning-paper-image17090564<br />Number 9 – “water cycle” retrieved March 5, 2011 from http://www.urbanrivers.org/water_cycle.html<br />Number 10 – “piece of wood” retrieved March 5, 2011 from http://www.istockphoto.com/stock-photo-4249015-single-piece-of-wood.php<br />Number 11 – “baseball bat” retrieved March 5, 2011 from http://dee-wnax.itmblog.com/2009/08/<br />Number 12 – “piece of paper” retrieved March 5, 2011 from http://www.curling.org.au/blog/Lists/Posts/Post.aspx?List=677e8176%2D8663%2D4361%2Da012%2D566d1db4b5a7&ID=31<br />Number 13 – Microsoft 2007 Clipart, retrieved from document clipart “paper plane”, March 5, 2011<br />Number 14 – Microsoft 2007 Clipart, retrieved from document clipart “corn”, March 5, 2011<br />Number 15 – Microsoft 2007 Clipart, retrieved from document clipart “popcorn”, March 5, 2011<br />Number 16 – “big car” retrieved March 5, 2011 from http://www.city-data.com/forum/automotive/139197-news-do-you-own-small-car.html<br />Number 17 – “rusty car” retrieved March 5, 2011 from http://www.bumpworthy.com/bumps/668<br />Number 18 – Microsoft 2007 Clipart, retrieved from document clipart “firework”, March 5, 2011 <br />Number 19 – Microsoft 2007 Clipart, retrieved from document clipart “firework”, March 5, 2011 <br />Number 18 – Microsoft 2007 Clipart, retrieved from document clipart “confused”, March 5 2011<br />Number 19 – Microsoft 2007 Clipart, retrieved from document clipart “glass bottle“, March 5, 2011<br />Number 20 – Microsoft 2007 Clipart, retrieved from document clipart “recycled“, March 5, 2011<br />Number 21 – Microsoft 2007 Clipart, retrieved from document clipart “aluminium can“, March 5, 2011<br />Number 22 – Microsoft 2007 Clipart, retrieved from document clipart “plastic bottle“, March 5, 2011<br />

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