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Chemestry - Coggle Diagram
Chemestry
Analyze and interpret data on the properties of the substances before and after the substances interact to determine if a chemical reaction has occurred.
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A physical property is a property that can be easily changed, and are measurable
Appearance: the appearance (how it looks) of something can change during a chemical reaction. The marshmallow looked white and fluffy, but after it was burned you can see burnt marks on the marshmallow
Freezing/Melting Point; The freezing/melting point is the point at which something freezes or melts. When exposed to heat the butter (purple tie) melted. Then if we change the transition of ice to water to water to ice; the water freezes to ice. (Red tie)
Mass; the mass (amount) can change. Take the broken pencil. The mass of the pencil changed when you broke it in half.
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Examples of Balanced Equations. Balanced Equations help show the conservation of mass. What goes in, must come out.
H2 + O1 = H2O
The two hydrogen molecules, and the one oxygen molecule create water, which is H2O
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C + O2 = CO2
One carbon atom, and two oxygen atoms create carbon dioxide, or CO2.
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6CO2 + 6H2O = C6H12O6 + 6O2.
Six carbon combine with six water molecules create glucose (sugar) and six oxygen molecules.
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Use a model to explain that atoms are rearranged during a chemical reaction to form new substances with new properties. Explain that the atoms are all present in the products and thus the total number of atoms is conserved.
6CO2 + 6H2O = C6H12O6 + 6O2
There are six carbon, and twelve oxygen reacting with twelve hydrogen and six oxygen. It product is glucose (six carbon, twelve hydrogen, and six oxygen) and six pairs of oxygen molecules.
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C + O2 = CO2
The vacant electrons in the carbon and the two oxygen atoms are being rearranged to create CO2 - carbon dioxide
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Conservation of Mass
What goes into a chemical reaction, must come out. Matter cannot be created or destroyed.
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