This lesson introduces student to the concepts of relative atomic mass and relative formulae and uses this as a platform to introduce calculation of empirical formulae. The calculation of empirical formulae is introduced through a methodical tabled approach which students can master readily and then attempt with out the framework. They then get to practice their calculation on a made up compound made of sweets. If they get the empirical formula correct they get to eat the sweets. Save yourself some time and grab a bargain.

The start of this lesson involves a BIG write where students are provided with information on the water poisoning incident at Camelford and are asked with success criteria to explain how they could test to see if the water was safe to drink using knowledge from previous lessons in this topic. The second half of this lesson involves a learning check to see who is confident with writing and balancing symbol equations. On the back of this check confident students compete in a race with other groups of confident students to balance a series of ever increasingly hard equations. Students who are less confident work with the teachers in a focus group on balancing equation. I used this for an observed lesson and it worked really well. Save yourself some time and hassle and grab yourself a bargain.

Entire KS3 scheme of work with level assessed task and end of unit test with markscheme and levels. Created around the new KS3 national curriculum framework it encompasses powerpoint based lessons and associated worksheets, homework and assessments Each lesson includes a requisition list for lab techs and where it is not obvious foot notes have been created. Each lesson has been planned to last between 50-60 minutes and includes differentiated outcomes and activities I taught this to my year 7s and it worked really well but also allowed me to make a few tweaks that you can now benefit from. All in all it took me about 25hours to create during my summer holidays so save yourself some time and grab yourself a bargain! Lesson 1 - Introduction to acids and alkalis - practical identifying everyday acids and alkalis with blue and red litmus paper Lesson 2 - Finding out how strong acids and alkalis are - practical using universal indicator Lesson 3 - Neutralisation reactions - class demo of mixing acids and alkalis with universal indicator Lesson 4 - Investigating which neutralises more acid - own brand or branded indigestion tablets Lesson 5 - Introduction to chromatograpy - practical Lesson 6 - Conservation of mass - dissolving salt in water practical Lesson 7 - Separating salt from rock salt practical through filtration Lesson 8 - Separating salt from water practical through evaporation Lesson 9 - Level assessed task on dissolving Lesson 10 - End of topic test with markscheme

Lesson 1 looks at investigating through a practical why some waters lather better than others and concludes with a BIG write/6 mark question that has success criteria which can be readily marked by yourself or the students. Lesson 2 - Introduces students to the idea of calculating concentrations of solute in solutions. All worksheets are provided. Save yourself some time and grab a bargain.

An introduction Key stage 3 lesson on acids and alkalis, based on the new national curriculum framework. Students identify physical properties of alkalis and acids - soapy to touch, sour tasting Students identify chemical properties from diagrams and formulas of alkalis and acids. Small experiment with requisition list included - testing acids and alkalis with red and blue litmus paper.