Chemistry chapter 7 lesson 4

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Chemical Engineering

8th

Last updated 10:54 PM on 2/22/23
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13 Terms

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chemical property
a characteristic of matter that can be observed as it changes to a different type of matter
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examples of chemical properties
the ability to BURN, RUST, or ROT
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chemical change
a change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties
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signs a chemical change has occurred
bubbles, energy change, odor change, color change, change in temperature
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reactants
the substances present BEFORE a reaction takes place
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product
the new substance present AFTER a reaction takes place
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concentration
the amount of substance in a certain volume
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energy change
when a chemical reaction produces an exothermic (heat released) or endothermic (heat absorbed) reaction
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formation of bubbles
when a chemical reaction produces the formation of a new gas (not the physical change of boiling)
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change of odor
when a chemical change produces a new odor, ex: when food burns or rots
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change of color
when a chemical change makes a material change to a new color
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rate of reaction
measure of how fast a chemical reaction occurs (can be affected by concentration or surface area)
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surface area
the measurement of the outer surface of an object (greater surface area can increase the rate of a chemical reaction)