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Pictures of pipe, Fertilizer, and Reddish Brown Substance.

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Pictures of pipe, Fertilizer, and Reddish Brown Substance.

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the tiny pieces that all matter-- all the stuff in the world-- is made of

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The temperature at which a substance changes from the liquid phase to the gas phase.

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the temperature at which a substance changes phase from the solid phase to the liquid phase

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something that can be observed about a substance, such as color, smell, or boiling point

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the relative size of things

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Something that Is made of all the same groups of atoms

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How do new substances form?

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What is the Reddish brown substance in the water?

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Different substances have different properties.

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Things that are too small (Or too large) to be seen can be studied with models.

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Substances have different properties because they are made of different groups of atoms. These atoms vary in type or number of atoms that make up the group.

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Groups of atoms repeat to make up a substance

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a three-dimensional arrangement of atoms or molecules that exhibits a specific pattern or connectivity, often highlighted by self-catenation in the structure.

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When atoms join together, the group is called a molecule. The atoms in a molecule can the the same. For example, nitrogen gas molecules are just two atoms of nitrogen joined together. The atoms in a molecule can also be different. For example, a water molecule has two hydrogen atoms and two oxygen atoms.

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a substance that cannot be broken down into simpler substances.

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a structure formed by a repeating group of atoms linked together in a large network.

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a group of atoms that is repeated within a molecule.

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A starting substance that is part of a chemical reaction.

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an ending substance that is made during a chemical reaction.

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How did the rust form?

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During a chemical reaction, one or more substances change into one or more different substances.

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During a chemical reaction, atoms do not change from one type to another.

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during a chemical reaction, atoms rearrange to form different groups of atoms.

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The iron pipes and the fertilizer changed into rust.

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to change the order or position of something.

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What was produced during the reaction between the iron pipes and the fertilizer?

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During a chemical reaction, all of the atoms that make up the reactants form to form the products.

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During a chemical reaction, atoms cannot be created or destroyed.