chemistry is everywhere!
DESCRIPTION
Tiger's 7th grade chemisty photo 7 Dalian Maple Leaf Foreign Nationals School Ms.Wolfenden and Mr.ArcaTRANSCRIPT
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CHEMISTRY IS EVERYWHERE!
Tiger Dingsun
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Table of Contents
Matter Not Matter Pure Substance Element Compounds Mixtures Heterogeneous Mix
tures Homogeneous Mixt
ures Mass
Volume Suspension Emulsion Mechanical Mixture Reversible Change Non-Reversible Cha
nge Physical Change Physical Change Pa
rt 2 Chemical Change Another Chemical
Change
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Matter
Matter is anything that has mass and volume
This fish has mass and volume so it is matter
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Not Matter
Anything that does not have mass or volume, like heat, light, etc.
The light bulb is giving off light. Light has no mass or volume.
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Pure Substance
A pure substance is something that is made out of the same kind of particles.
The diamond in the ring is a pure substance because it is only made out of carbon particles.
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Element
An element is a pure substance that can not be broken down into simpler substances and are made out of the same molecules
This aluminum foil Is only made out of aluminum molecules.
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Compounds
A compound is a pure substance that is made out of more than one element.
This sugar is a compound because it is made out of carbon, hydrogen, and oxygen
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Mixtures
A mixture is 2 or more substances mixed together but not chemically bonded
This piece of paper is a mixture. It has paper and ink.
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Heterogeneous Mixtures
A heterogeneous mixture is a mixture where you can tell it is not just one substance.
The wall is a heterogeneous mixture of concrete, rock and soil.
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Homogeneous Mixtures
A homogeneous mixture is a mixture that looks like it is one substance
This grape juice is a mixture of grape juice concentrate and water, but it looks like one substance.
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Mass
Mass is the amount of matter something has.
The chips’ mass is 12 grams
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Volume
Volume is how much space something takes up.
This bottle of water’s volume is 200 ml.
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Suspension
A suspension is a substance with another substance in it but not dissolved in it.
This ranch is a suspension because it has herbs suspended in it.
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Emulsion
An emulsion is a suspension with super tiny little balls of a substance in another, but they don’t mix and are spread out evenly.
This mayonnaise is an emulsion because the vegetable oil is suspended in the vinegar.
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Mechanical Mixtures
A mechanical mixture is a mixture where you can easily tell the different parts.
This pile of pens and pencils is a mechanical mixture because you can see the individual pens and pencils.
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Reversible Change
A reversible change is a change that you can reverse so it seems like it never happened.
the girl swings up but she can just swing back down so it is a reversible change.
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Non-Reversible Change
A non-reversible change is a change that you can never change back
If you cook something, you can’t make it raw again
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Physical Change
A physical change is changing something’s shape, not what it is made of
The footprint is changing the water’s shape to a footprint shape
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Physical Change Part 2
Another example of a physical change is crushing a snack so it changes into a powder shape.
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Chemical Change
A chemical change changes what the substance is made of.
The moisture in the air causes a chemical change with the metal and creates iron oxide which is rust.
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Another Chemical Change
Another chemical change is photosynthesis. Photosynthesis is when plants take carbon dioxide, sunlight, and nutrients from the soil to make sugar and oxygen.