Warm-UpWrite a word equation to represent the following situation:– Ammonia is an important chemical in

fertilizer. It is produced by reacting hydrogen gas with nitrogen gas.

Chemical Equations

LG: I can write word equations and chemical equations to represent chemical reactions

Recall: Formulas for Elements• Most elements can be represented with the

element symbol: ie. Sodium Na• BUT there are 7 gas elements that always

travel in pairs: Hydrogen Iodine NitrogenChlorine Bromine OxygenFluorine

HINClBrOF!

Chemical Equations

Hydrogen gas reacts with oxygen gas to produce waterDescription

Word Equation

Chemical Equation

Chemical Equations

Sodium reacts with chlorine gas to produce sodium chloride

Description

Word Equation

Chemical Equation

Chemical Equations

Magnesium hydroxide and hydrogen gas are produced when magnesium reacts with water

Description

Word Equation

Chemical Equation

Video: Bill Nye Chemical Recations

Answer the following while you watch the video:– What is a chemical reaction?– How do you know a chemical reaction has taken

place?