Chapter 7.pptx - Chapter 7 Chemical Reactions Its all a...

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Chapter 7 Chemical Reactions It’s all a matter of balance.
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What is a chemical reaction? Chemical Reactions occur when substances undergo fundamental changes in identity. The substances at the beginning of the reaction have different chemical and physical properties than those substances at the end of the reaction
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What is a chemical reaction? Chemical Reactions occur when substances undergo fundamental changes in identity. The substances at the beginning of the reaction have different chemical and physical properties than those substances at the end of the reaction. The substances present at the beginning of the reaction are called reactants .
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What is a chemical reaction? Chemical Reactions occur when substances undergo fundamental changes in identity. The substances at the beginning of the reaction have different chemical and physical properties than those substances at the end of the reaction. The substances present at the beginning of the reaction are called reactants . The substances present at the end of the reaction are called the products.
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Evidence of a chemical reaction. There are five indicators that a chemical reaction has taken place. A reaction can have any one of these indicators, or any combination of them.
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Evidence of a chemical reaction. There are five indicators that a chemical reaction has taken place. A reaction can have any one of these indicators, or any combination of them. The indicators are; 1) A change in color by the solution.
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Evidence of a chemical reaction. There are five indicators that a chemical reaction has taken place. A reaction can have any one of these indicators, or any combination of them. The indicators are; 1) A change in color by the solution. 2) The formation of a precipitate in a previously clear solution.
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Evidence of a chemical reaction. The indicators are; 1) A change in color by the solution. 2) The formation of a precipitate in a previously clear solution. 3) The formation of a gas when one reactant is added to the solution.
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Evidence of a chemical reaction. The indicators are; 1) A change in color by the solution. 2) The formation of a precipitate in a previously clear solution. 3) The formation of a gas when one reactant is added to the solution. 4) The emission of light from the experiment.
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Evidence of a chemical reaction. The indicators are; 1) The formation of a precipitate in a previously clear solution. 2) The formation of a gas when one reactant is added to the solution. 3) The emission of light from the experiment. 4) The emission of heat ( exothermic) or absorption of heat ( endothermic ) by the solution.
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Chemical Equations Chemical Equations are symbolic representations of what occurs during a chemical reaction.
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Chemical Equations Chemical Equations are symbolic representations of what occurs during a chemical reaction.
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