Match the following blanks

The formula describes the actual number of each element in a molecule or compound

Formula describes the lowest whole-number ratio of the elements in a compound

A unit in chemistry that serves as a bridge between the atomic and macroscopic worlds.

the mass of a single atom in amu

mass of one mole of a substance.

What is the significance of Avogadro's number in stoichiometry?

B) It represents the number of atoms in a mole

What is a limiting reactant in a chemical reaction?

A) The reactant that is completely consumed first

C) The reactant that determines the temperature of the reaction

B) The reactant that is left over after the reaction

D) The reactant that increases the reaction rate

Why is it important to identify the limiting reactant in a chemical reaction?

A) To determine the maximum amount of product formed

B) To find the temperature of the reaction

C) To calculate the pressure of the system

D) To measure the volume of the reactants

Match the following steps used to convert mass amounts to moles.

Convert given mass amounts to moles

Use mole ratios from the balanced equation to convert moles of given substance to moles of substance requested

Write a balanced equation for the reaction

Convert moles back to mass units desired

What does the delta symbol (Δ) indicate in a chemical equation?

C) Heat is applied to the reaction

D) The reaction is at equilibrium

Which of the following best describes a single displacement reaction?

B) A reaction where an element replaces another element in a compound

D) A reaction where two elements combine to form a compound

C) A reaction where a compound breaks down into simpler substances

A) A reaction where two compounds exchange ions

What is a double displacement reaction?

C) A reaction where two compounds exchange positive and negative ions to form two new compounds

B) A reaction where a compound breaks down into simpler substances

A) A reaction where two elements combine to form a compound

D) A reaction where an element replaces another element in a compound

Chemistry Precision and Design Test 4

11th Grade

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35 Qs

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Chemistry Precision and Design Test 4

Quiz

•

Science

•

11th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS1-7, MS-PS1-2, MS-PS1-1

Standards-aligned

Michelle Hudson

Used 8+ times

FREE Resource

35 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does stoichiometry include?

A) Chemical reactions

B) Classify reactions

C) Quantitative relationships of chemical reactions

D) All of the above.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Define chemical reactions: ______ changes caused by collisions between atoms or molecules.

Physical

Chemical

Biological

Nuclear

What was Dalton’s proposed atomic theory?

Atoms are created in chemical reactions

Atoms are destroyed in chemical reactions

Atoms are not created or destroyed in chemical reactions, only rearranged

Atoms are converted into energy.

What is the law of conservation of mass?

The sum of the masses of the products is always equal to the sum of the reactants

The mass of the reactants is greater than the mass of the products

The mass of the products is greater than the mass of the reactants

Mass is lost in a chemical reaction.

What are the four types of common chemical reactions?

Combination

Decomposition

Single displacement

Double displacement

Composition

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe a decomposition reaction: This is the reverse of a combination reaction, a decomposition reaction involves the breakdown of a single reactant into two or more simpler substances. True or False?

True

False

DROPDOWN QUESTION

30 sec • 1 pt

A single displacement reaction involves replacing one element in a compound with (a) .

another

itself

the same element

none

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Chemistry Precision and Design Test 4

35 questions

What does stoichiometry include?

Define chemical reactions: ______ changes caused by collisions between atoms or molecules.

What was Dalton’s proposed atomic theory?

What is the law of conservation of mass?

What are the four types of common chemical reactions?

Describe a decomposition reaction: This is the reverse of a combination reaction, a decomposition reaction involves the breakdown of a single reactant into two or more simpler substances. True or False?

A single displacement reaction involves replacing one element in a compound with (a) .

The purpose of writing a balanced equation in a chemical reaction is to (a)

Which of the following is not a step in solving a chemical reaction problem?

Fill in the blank: Using mole ratios from the balanced equation helps to convert moles of given substance to moles of substance ____.

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