Unit 6 - Chemical Equations - Honors Chemistry Final Exam Review

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What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

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What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms for each element is the same on both sides of the equation, adhering to the Law of Conservation of Matter.

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What is the coefficient in a chemical equation?

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A coefficient is a number placed in front of a chemical formula in an equation to indicate how many molecules or moles of that substance are involved in the reaction.

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What type of reaction is represented by the equation: @@ ext{Na}_{(s)} + ext{HCl}_{(aq)} ightarrow ext{NaCl}_{(aq)} + ext{H}_{2(g)}@@?

Back

This is a single replacement reaction, where sodium replaces hydrogen in hydrochloric acid.

Front

What is the Law of Conservation of Matter?

Back

The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it can only change forms.

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What is a synthesis reaction?

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A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product.

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What is a decomposition reaction?

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A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products.

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What is a double replacement reaction?

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A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

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What is a single replacement reaction?

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A single replacement reaction is a type of chemical reaction where one element replaces another element in a compound.

Front

How do you determine the products of a single replacement reaction?

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To determine the products of a single replacement reaction, identify if the free element can displace the element in the compound based on reactivity.