Understanding Chemical Reactions Quiz

What is the chemical symbol for water?

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DOK Level 1: Recall

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DOK Level 1: Recall

Which law states that mass is neither created nor destroyed in a chemical reaction?

• Law of Definite Proportions

• Law of Multiple Proportions

• Law of Conservation of Mass

• Law of Constant Composition

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DOK Level 1: Recall

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DOK Level 1: Recall

Explain why the mass of the reactants equals the mass of the products in a chemical reaction.

• Because of the Law of Definite Proportions

• Because of the Law of Conservation of Mass

• Because of the Law of Multiple Proportions

• Because of the Law of Constant Composition

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DOK Level 2: Skill/Concept

Which of the following is an example of a chemical reaction?

• Melting of ice

• Dissolving sugar in water

• Rusting of iron

• Boiling of water

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DOK Level 1: Recall

Describe the role of coefficients in a balanced chemical equation.

• They indicate the number of atoms of each element.

• They indicate the number of molecules of each substance.

• They indicate the mass of each substance.

• They indicate the volume of each substance.

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DOK Level 2: Skill/Concept

• Yes, because the number of atoms of each element is the same on both sides.

• No, because the number of oxygen atoms is different.

• Yes, because the mass of the reactants equals the mass of the products.

• No, because the number of potassium atoms is different.

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DOK Level 3: Strategic Thinking

Which of the following best describes a synthesis reaction?

• A single compound breaks down into two or more simpler substances.

• Two or more substances combine to form a single compound.

• An element replaces another element in a compound.

• Ions from two compounds exchange places to form two new compounds.

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DOK Level 1: Recall

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

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DOK Level 2: Skill/Concept