Chemistry Final Exam

The following generic equation represents which type of reaction: AX + B → A + BX

• Decomposition

• Single replacement

• Double replacement

• Synthesis

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

• Law of multiple proportions

• Ideal gas law

• Law of conservation of mass

• Law of conservation of momentum

Tags

NGSS.HS-PS1-7

In a chemical equation, what is the term for the number written before the chemical formula?

• Product

• Reactant

• Subscript

• Coefficient

What kind of reaction takes place when a compound breaks down into two or more new elements or compounds?

• Decomposition reaction

• Single replacement reaction

• Synthesis reaction

• Double replacement reaction

What term describes a solid formed during a chemical reaction in a solution?

• Participation

• Solvent

• Product

• Precipitate

Alterations in temperature, color, scent, and physical form can signal the presence of this.

• Physical change

• Chemical change

• Chemical equation

• Chemical equilibrium

What term describes a reaction where two or more substances combine to form a single product?

• Synthesis reaction

• Decomposition reaction

• Combustion reaction

• Single Replacement reaction

What is the statement that uses chemical formulas to represent the reactants and products involved in a chemical reaction?

• Chemical reactivity

• Activity series

• Chemical equation

• Chemical equilibrium

Tags

NGSS.HS-PS1-7

Chemical equations can be balanced by changing the ____________.

• Coefficients

• Subscripts

• Formulas

• Molecules

Which of the following is NOT an example of a chemical reaction?

• Burning wood

• Rusting iron

• Rotting food

• Boiling water

Tags

NGSS.MS-PS1-2