Conservation of Mass
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| Law of Conservation of Mass | The total mass of the reactants will always equal the mass of the products in a chemical reaction.
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| Matter | Anything takes up space and has mass.
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| Chemical Change | When a chemical reaction takes place and at least one new product is made (usually not reversible)
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| Physical Change | A change in the physical properties of a substance (is reversible)
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| Product | Substances result from a chemical reaction.
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| Reactant | Substances undergoing change in a chemical reaction.
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| Which of the following is NOT an example of matter? ice, air, light, water | light
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| Which characteristic would describe a physical change? reversible, not reversible, creates a new substance, includes burning a substance | reversible
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| During a chemical change, the substances undergoing change are called __________________. | reactants
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| The law of conservation of mass states that, in a chemical reaction, matter is never created nor ______________________. | destroyed
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| Physical Change or Chemical Change? Tearing a piece of paper | Physical
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| Physical Change or Chemical Change? Baking a cake | Chemical
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| Physical Change or Chemical Change? Burning a log | Chemical
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| Physical Change or Chemical Change? Melting ice cubes | Physical
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| Physical Change or Chemical Change? Cutting your hair | Physical
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| Physical Change or Chemical Change? Fireworks exploding | Chemical
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| A ____________________________ change is a change in the physical properties of a substance. | physical
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| Physical changes are usually _________________________________. | reversible
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| A ________________________________ change is when a chemical reaction takes place and at least one new product is made. | chemical
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| Chemical changes are usually ___________________________. | irreversible
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| The Law of Conservation of Mass states that the total mass of the products will always equal the mass of the _____________. | reactants
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