Chemical Reactions and Equations Vocabulary

One element replaces another element in a compound in this type of reaction.

• synthesis

• decomposition

• double replacement

• single replacement

A type of reaction in which two or more substances combine and form one compound is a _________ reaction.

• decomposition

• synthesis

• single replacement

• double replacement

A substance that increases reaction rate by lowering the activation energy of a reaction

• enzyme

• inhibitor

• catalyst

• coefficient

Chemical reactions that absorb thermal energy are _____________ reactions.

• exothermic

• endothermic

• synthesis

• decomposition

Tags

NGSS.HS-PS1-4

A substance that slows, or even stops, a chemical reaction

• inhibitor

• catalyst

• coefficient

• enzyme

Tags

NGSS.HS-PS1-5

A description of a reaction using symbols and chemical formulas

• reactant

• product

• chemical reaction

• chemical equation

A catalyst that speeds up chemical reactions in living cells

• combustion

• coefficient

• enzyme

• inhibitor

The starting substances in a chemical equation

• coefficients

• products

• enzymes

• reactants

Tags

NGSS.MS-PS1-1

A number placed in front of an element symbol or chemical formula in an equation

• catalyst

• coefficient

• inhibitor

• enzyme

Tags

NGSS.HS-PS1-7

A chemical reaction that releases thermal energy

• exothermic

• endothermic

• single replacement

• double replacement

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4