Mr. Tinter’s Class Mr. Tinter’s Class Physical and Physical and

Chemical Change Chemical Change ShowShow

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Chopping woodChopping wood

This is a This is a physical physical change. We change. We know this is a know this is a physical physical change change because it’s because it’s still wood, just still wood, just a different a different shape and size.shape and size.

Emma and Josh P

Boiling WaterBoiling WaterThis is an This is an example of a example of a physical physical change change because it is because it is still water still water after it boils. It after it boils. It just changes just changes from a liquid from a liquid to a gas. to a gas. Jordan and Alex

Bubbling YeastBubbling Yeast

Bubbling yeast Bubbling yeast is a chemical is a chemical change change because the because the bubbles are a bubbles are a new substance. new substance. (carbon (carbon dioxide)dioxide)Max and Andy

Crumpled Crumpled PaperPaper

The paper has The paper has gone through gone through a physical a physical change change because it is because it is still paper, it still paper, it only changes only changes shape, size shape, size and texture.and texture.Sam R and Julia

Melting IceMelting Ice Melting ice is Melting ice is a physical a physical change change because it is because it is still water still water (H(H22O). It just O). It just changed from changed from a solid to a a solid to a liquid and it liquid and it changed changed shape.shape.

Cassie and Dana

Alka Seltzer in Alka Seltzer in WaterWater

Alka seltzer in Alka seltzer in water shows a water shows a chemical chemical change change because a because a new new substance is substance is made. (COmade. (CO2)2)

Daniel and Josh

Melting Melting WaxWax

Melting wax is Melting wax is a type of a type of physical physical change change because it because it only changed only changed it’s shape and it’s shape and size not the size not the stuff the stuff the candle is candle is made of. made of.

Aishwarya and Annie

Mixing Colored Mixing Colored WaterWater

This This experiment experiment demonstrated demonstrated a physical a physical change change because the because the water is still water is still water, only water, only the color the color changed.changed.

Abby and Samantha

Slicing Bread Slicing Bread

This is a This is a physical physical change change because the because the bread is just bread is just changing size changing size and shape.and shape.

Christiaan

Steel or Iron Rusting

Rusting steel or Rusting steel or iron is a chemical iron is a chemical change because change because there is a new there is a new substance… rust. substance… rust. You can’t change You can’t change it back to steel or it back to steel or iron.iron.

Laura and Mackenzie

Tearing paper Tearing paper

When you tear When you tear paper it is a paper it is a physical physical change change because it is because it is still paper, still paper, only the size only the size and shape and shape changes. changes. Utsav and Erick

Vinegar and Baking Vinegar and Baking SodaSoda

This is a chemical This is a chemical change because it change because it bubbles up bubbles up creating carbon creating carbon dioxide. It also dioxide. It also can’t be changed can’t be changed back to it’s back to it’s original form. original form.

Adam and Antonio

What is What is burning a log burning a log in the in the fireplace?fireplace?

Can you Can you decide?decide?

Physical Change?

Chemical Change?

Burning wood is a chemical Burning wood is a chemical change. The chemical change. The chemical structure of the wood structure of the wood changes and a new changes and a new substance created (ash). Ash substance created (ash). Ash has different properties than has different properties than the wood since it loses it’s the wood since it loses it’s ability to burn. ability to burn.

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