Chemical Reactions Flashcards

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1
Q

Energy of breaking bonds

A

Energy is needed to break bonds

Results in +ΔH

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2
Q

Energy of making bonds

A

Energy is lost when bonds are made

Results in -ΔH

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3
Q

Endothermic Reaction

A

A reaction where the products have more energy than the reactants, so absorbs energy (+ΔH)

Results in decrease of temperature

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4
Q

Exothermic Reaction

A

A reaction where the products have less ennergy than the reactants, so releases energy (-ΔH)

Results in increase of temperature

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5
Q

Ionic Bonds

A

Between metal & non-metal

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6
Q

Covalent Bonds

A

Between non-metals

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7
Q

Metallic Bonds

A

Between Metals

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8
Q

Catalyst

A

A substance that increases the rate of a chemical reaction

Not used up during the reaction

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9
Q

Respiration

A

glucose + oxygen -> carbon dioxide + water

Exothermic reaction

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10
Q

Hydrolysis

Digestion

A

Incorporates water into larger structures, breaking them down.

Double decomposition reaction

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11
Q

Photosynthesis

A

carbon dioxide + water → glucose + oxygen

Endothermic reaction

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12
Q

Reaction rate differences between combustion and resperation

A

Combustion relaeases energy all at once, while respiration releases it in small steps.

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