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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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A structure formed by repeating groups of Atoms linked together in a large network

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each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e. the number of protons in the nuclei of its atoms.

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

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repeating group of atoms. some substance are made of groups of atoms that repeat. molecules

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

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something that is made of all the same atoms or groups of atoms.

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the relative size to things

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different substances have different properties

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Things that are too small (or to large) to see can be studied with models.

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Substances have different properties because they are made of different groups of atoms. These groups vary in the type of 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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How did the new substances form?

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what is the reddish brown substance in the water?

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All three samples have different properties. Therefore, they are different substances.

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How did the rust form in the pipes?

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5.During a chemical reaction, one or more starting substances (reactants) change into one or more different substances (products)

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

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

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a process in which atoms rearrange to form anew substances

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a starting substances that is part of a chemical reaction

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

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to change the order or position of something

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Claim 3- the iron pipes and the fertilizer changed into rust

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What was produced during the reaction between the iron pipes and fertilazier

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

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

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during a chemical reaction, the rust and another substance was produced.