Types of reaction: Exchange reaction

Text title: Tyoes of reactions: Exhange reaction 

Text type: Article

Text source: Miss Abernathy´s chemistry site 

Text Creator: Miss Abernathy 

Text purpose: To inform students types of reactions, specifically Exchange reaction. 

An exchange reaction is when two metal ions swap salts. 
The general equation is AB + CD > AD + CB

Solubility: Is something is soluble, it dissociates and dissolve. If something is insoluble it dissosciates and dissolves. 

Precipitate also knows as solid happens if one of the salts is insoluble. A solid is made from two liquids. 

Solubility rules:

1) All nitrates are soluble

2) All sodium and potassium compounds are soluble

3) All chlorides are soluble except silver and lead

4) All sulfates are soluble except barium, lead and calcium

5) All carbonates are insoluble except sodium and potassium

6) All hydroxides are insoluble except sodium and potassium

You can write it as: Two products were made are...

                                AD is soluble, CB is insoluble according to ___rule in the solubility rules

Mixing solutions example: 

Lead nitrate and potassium iodide

Word Equation - Lead nitrate + Potassium Iodide → Lead Iodide + Potassium nitrate

Symbol Equation - PbNO3 + KI → PbI + KNO3

Observations - State colour? Colour changes? Mass changes? 

Explanation - Rule #1

Critical literacy question

Who is the intended audience? Level 1 students taking up a chem external and internal because it is on a science teachers ¨external¨ website.