Chemistry - Reaction Unit Review

A balanced chemical equation is a direct presentation of which law?

• law of multiple proportions

• law of conservation of mass

• ideal gas law

• law of conservation of momentum

Tags

NGSS.MS-PS1-5

In a chemical equation, the number written in front of the chemical formula is called the _________.

• equation

• product

• coefficient

• reactant

What type of reaction occurs when a compound breaks down into two or more new elements or compounds?

• decomposition reaction

• synthesis reaction

• single-replacement reaction

• double-replacement reaction

A solid produced during a chemical reaction in a solution is called a ___________.

• solute

• solvent

• precipitate

• product

Tags

NGSS.MS-PS1-2

A reaction in which two or more substances react to produce a single product is called a ______________.

• combustion reaction

• synthesis reaction

• single-replacement reaction

• decomposition reaction

What does this generic equation represent? Q + XZ --> X + QZ

• double-replacement reaction

• synthesis reaction

• decomposition reaction

• single-replacement reaction

What reaction type does this generic equation represent? Q + Z --> QZ

• synthesis
• decomposition

• single-replacement

• combustion

Which reaction type does this generic equation represent? QT --> Q + T

• decomposition reaction

• combustion reaction

• synthesis reaction

• precipitate reaction

Occurrence of this can be indicated by changes in temperature, color, odor, and physical state

• reactant

• chemical equation

• chemical reaction

• physical change

Tags

NGSS.MS-PS1-2

What do you call a statement using chemical formulas to describe the reactants and products involved in the chemical reaction?

• chemical reaction

• product

• reactant

• chemical equation

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5