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By Ramses Rodriguez VI A

Phys chem science speech 1

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Page 1: Phys chem science speech 1

By Ramses RodriguezVI A

Page 2: Phys chem science speech 1

Objective:

Be able to distinguish between a physical and chemical change.

In a Funny Way!

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MatterMatter is everywhere. Matter is anything that takes up space and has mass.

Matter is constantly experiencing both chemical and physical changes.

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Physical ChangePhysical changes occur when matter changes its property but not its chemical nature.

Physical property changes could include a change in: texture, shape, size, color, odor, volume, mass, weight, and density.

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Physical Change

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Chemical ChangeChemical changes are changes matter undergoes when it becomes new or different matter.

To identify a chemical change look for signs such as color change, bubbling and fizzing, light production, smoke, and presence of heat.

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Chemical ChangeA chemical change occurs when fireworks are used. Fireworks are made of metals such as magnesium and copper. These change chemically as they light up the sky.

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Now let’s Play!

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Is it a chemical or physical change?Sugar dissolving in tea

•Chemical Change

•Physical Change

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Did it change size, color, shape (Physical Change)?

orDid it become different matter

(Chemical Change)?

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Is it a chemical or physical change?Logs burning

•Chemical Change

•Physical Change

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Did it change size, color, shape (Physical Change)?

orDid it become different matter

(Chemical Change)?

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Is it a chemical or physical change?Breaking water up by separating it into hydrogen and oxygen

•Chemical Change

•Physical Change

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Did it change size, color, shape (Physical Change)?

orDid it become different matter

(Chemical Change)?

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Now a Demostration!

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