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Physical and chemical changes happen everyday, and everywhere. Physical changes are the most common, with any change in the appearance of something being considered a physical change. Chemical changes are also more common then you might think. Cooking food, burning wood, and even your body's metabolism are all chemical changes.

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These PetCO credits are brought to you by PetCO

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These credits are brought to you by Jake Industries© and Mackenzie the secretary

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These credits are brought to you by Jake Industries© and Mackenzie the secretary

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(But mostly Jake industries©)

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Macey (Background)(and hosting the Padlet)

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The Creator....Jake S.
The Helper.....kenzie H.
The Watcher...Liam W.
The Cheerleader..Manny P.
The other person... Macey S.

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(Mackenzie too, I guess)
(And a tad of Manny)

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All credit goes to Jake™. Jake™ is a registered trademark of Jake Industries©.

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Chemical composition refers to the arrangement, type, and ratio of atoms in a substance. Chemical composition changes in a chemical change, but not in a physical change

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The ingredients form a new substance. In order to become a cake, heat must be given to the mixture, and giving/taking heat often occurs during a chemical reaction.

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The two substances combine to form a new substance. It also releases a gas, a telltale sign of a chemical change.

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Chemical change

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It changes state, but not chemical structure. It is still butter, just in a melted form.

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It's shape changes, but it's chemical structure doesn't. Molding it is only a physical change, as it is still clay.

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Physical change

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A chemical reaction occurs when there is a chemical change. It is caused by the rearrangement of the molecular structure(s) of the chemicals/elements

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Crystals are a physical change caused by a lattice of atoms

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A chemical reaction of oxygen and iron.

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There are chemical changes everywhere. Iron rusting is a  to oxygen. Wood burning is a chemical change, changing the wood into carbon (ash). Even your metabolism is a chemical change, breaking down food and drink into their elements.

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There are chemical changes everywhere. Iron rusting is a  to oxygen. Wood burning is a chemical change, changing the wood into carbon (ash). Even your metabolism is a chemical change, breaking down food and drink into their elements.

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Yes. Many physical changes, such as changing state of matter, can result in rearrangement of atoms. Also, when something becomes a crystal, atoms are rearranged. This is because crystals are a result of a lattice of atoms.

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Yes. Many physical changes, such as changing state of matter, can result in rearrangement of atoms. Also, when something becomes a crystal, atoms are rearranged. This is because crystals are a result of a lattice of atoms.

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An alkali metal reacting to water

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A state change is a physical change.

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A physical change is a change in physical properties. It can be a change of state, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

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A physical change is a change in physical properties. It can be a change of state, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

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When a chemical change occurs, atoms rearrange themselves, and there is an energy change. This process is a *chemical reaction*.

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When a chemical change occurs, atoms rearrange themselves, and there is an energy change. This process is a *chemical reaction*.

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Chemical changes occur when chemicals combine to make a new substance, or separate into two+ different substances. 

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Chemical changes occur when chemicals combine to make a new substance, or separate into two+ different substances. 

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Physical changes are changes that affect the FORM of an object, but not it's *chemical composition.*

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Physical changes are changes that affect the FORM of an object, but not it's *chemical composition.*