2.4.2 Defining acids and alkalis Worksheet 2.4.2 Quick starter; Recognise acids used in Exploring acids everyday life Interactive activity: Match the foods to Describe what all acids have in common the main acid(s) Evaluate the hazards they contain; that acids pose Interactive activity: Match the hazard to the symbol; Slideshow: What do acids have in common?; Video 2.4.3 Defining acids and alkalis Worksheet 2.4.3 Quick starter; Recognise alkalis used Exploring alkalis in everyday life Interactive activity: Describe what all alkalis Drag the products to have in common the correct group: Evaluate the hazards acidic or alkaline?; that alkalis pose Slideshow: What do alkalis have in common? 2.4.4 The pH scale for measuring Worksheet 2.4.4; Quick starter; May be combined Use indicators to identify Using indicators acidity/alkalinity; and acids and alkalis Practical sheet Slideshow: What with lesson 2.4.5 indicators 2.4.4; are indicators? A Analyse data from different indicators look at different Technician’s Compare the notes 2.4.4 types of indicator; effectiveness of different Interactive activity: indicators Drag the acids to the correct group – strong or weak 2.4.5 The pH scale for measuring Worksheet 2.4.5; Quick starter; Describe what the pH Using universal acidity/alkalinity; and Practical sheet Interactive activity: scale measures indicator indicators Measure and record pH 2.4.5; Match the colour values given from universal Technician’s Identify the advantages notes 2.4.5 indicator paper to of universal indicator the correct product; Hangman: Key vocabulary game
2.4.2 Exploring acids Defining acids and alkalis Recognise acids used in everyday life Describe what all acids have in common Evaluate the hazards that acids pose Worksheet 2.4.2 Quick starter; Interactive activity: Match the foods to the main acid(s) they contain; Interactive activity: Match the hazard to the symbol; Slideshow: What do acids have in common?; Video 2.4.3 Exploring alkalis Defining acids and alkalis Recognise alkalis used in everyday life Describe what all alkalis have in common Evaluate the hazards that alkalis pose Worksheet 2.4.3 Quick starter; Interactive activity: Drag the products to the correct group: acidic or alkaline?; Slideshow: What do alkalis have in common? 2.4.4 Using indicators The pH scale for measuring acidity/alkalinity; and indicators Use indicators to identify acids and alkalis Analyse data from different indicators Compare the effectiveness of different indicators Worksheet 2.4.4; Practical sheet 2.4.4; Technician’s notes 2.4.4 Quick starter; Slideshow: What are indicators? A look at different types of indicator; Interactive activity: Drag the acids to the correct group – strong or weak May be combined with lesson 2.4.5 2.4.5 Using universal indicator The pH scale for measuring acidity/alkalinity; and indicators Describe what the pH scale measures Measure and record pH values Identify the advantages of universal indicator Worksheet 2.4.5; Practical sheet 2.4.5; Technician’s notes 2.4.5 Quick starter; Interactive activity: Match the colour given from universal indicator paper to the correct product; Hangman: Key vocabulary game