Red Cabbage Indicator Year 7 Science.

Slides:

Advertisements

Similar presentations

Safety in the Lab What is different about this classroom and every other classroom in your school?

Advertisements

Red Cabbage PH Indicator

PH, Acids and Bases.

PH, Acids and Bases.

Acids and alkalis This quiz has 10 questions. For each question you have to decide if the statement is true for acids or alkalis. BEWARE ! One mistake.

Acids, Bases and Buffers OH MY!!

Exploring Science 7© Pearson Education Limited The pH scale indicates Ahow hot something is. Bhow acid or alkaline something is. Chow long something.

Acids and Alkalis. Hazard signs to learn… hi Acid HarmfulIrritant Corrosive.

ACIDS AND BASES. Acids  Acidic solutions contain water and hydrogen ions (H+)

Acids and Bases And Neutralisation Reactions p

Acids and Bases.

Neutralisation Noadswood Science, 2012.

STARTER You have three unknown liquids in three bottles and you are given universal indicator. How can you tell which is which in each bottle ?

Lesson: Acids and Bases

Unit 4 Acids, Bases and pH. Water molecules dissociate and ionize to form H 2 0  H + + OH - Water  hydrogen ion + hydroxide ion In pure water, there.

Red Cabbage Indicator. Homemade indicator Equipment -Beaker of water -Mortar and pestle -Filter and filter paper -Bottle -Piece of Red Cabbage The best.

Acidity and Alkalinity How do we tell an acid from a base and what is it good for?

Quiz on acids and alkalis. Using the quiz... Click through the quiz to see the questions and answers. Remember it is MUCH better to try to think of the.

Acids and alkalis Solutions can be sorted by whether they are: acid, alkali or neutral. When a substance dissolves in water it makes a solution.

Starter What colour is an Acid on the UI scale? What colour is an Alkali on the UI scale? What colour is Neutral on the UI scale?

L/O – To know how the pH scale can be used to show acids and alkalis

Acids & Bases. pH scale Ranges from 0-14 Ranges from – 6 = Acid 0 – 6 = Acid 0 is most acidic 0 is most acidic Concentration of H + (hydrogen or.

ACIDS AND BASES PH.

Acids & Bases. pH scale Ranges from 1-14 Ranges from – 6 = Acid 1 – 6 = Acid 1 is most acidic 1 is most acidic Concentration of H + (hydrogen)

Acids and Bases Chapter 32.

Answer these questions in the back of your book. What is a chemical reaction? What is a physical reaction? What is an acid? What is an alkali? What is.

Indicators For Acids & Alkalis

Acids & Bases. Indicators Indicators contain certain dyes which change color at various pH values. Indicators contain certain dyes which change color.

Learning Objectives Acids and Alkalis

Acids and Bases.

Indicators 8A1 – Thursday 26 Nov 2014.

Neutralisation D. Crowley, 2008.

21/04/2018 Acids and Alkalis.

Red Cabbage pH Indicator

7.2 THE STRENGTH OF ACIDS AND ALKALIS

Acids and Alkali Alex Cheong 1P404.

Name: ___________________ ( ) Class: 2A

Acid and Bases Chapter 24.

Acids and Bases.

Lesson Starter Explain what happens to the colour and pH of an acid if alkali is added Describing neutralisation reactions Everyday neutralisations.

UNIT 1 ACIDS, ALKALIS & CHEMICAL REACTIONS Lesson 2 – pH paper

UNIT 1 ACIDS, ALKALIS & CHEMICAL REACTIONS Lesson 1 - Introduction

W Richards The Weald School

Acid and Base Jeopardy! Begin.

Acids and Bases Characteristics of Acids and Bases Properties of Acids

Acids and Bases.

Acids, Bases and Salts In this section we look at the properties of acids and bases, find out what salts are, and how to prepare them.

W Richards Worthing High School

Acids and Bases Pop Can Acids and Bases.

28/11/2018 Acids and Alkalis.

S2 Revision Acids & Alkalis 12/1/2018 Topics 8 & 9.

5 a day revision Acids and alkalis What do these hazard symbols mean?

W Richards The Weald School

Acids & Alkalis Crossword

Acids and Bases By Danya Ardis.

LO: I understand how the pH of a salt solution can vary.

Starter: Describe in detail how we can we test to see if a liquid is an acid or an alkali? Extension: Explain the difference between a base and an alkali.

Acids and Bases.

Test Wednesday/ Thursday

W Richards Worthing High School

Definitions Indicators and Measurements

Learning Objectives 1/11/07 Acids and Alkalis

Neutralisation (Please copy these main points to your books)

Acids and Bases.

pH Scale Strengths of Acids and Bases

ACIDS & ALKALIS.

Year 7 multiple-choice main test 7E Acids and alkalis

Presentation transcript:

Red Cabbage Indicator Year 7 Science

Learning objectives Identify the pH of substances from the colour obtained using Universal Indicator Distinguish between acids and alkalis using Litmus paper Produce an indicator solution from red cabbage and add a variety of common acids and alkalis

Common indicators Universal indicator Litmus paper

Grind some red cabbage with hot water Wear goggles!

Transfer 5ml of cabbage indicator to 5 tubes using a syringe Wear goggles!

Add the acids and alkalis to the cabbage indicator Wear goggles! Hydrochloric acid Vinegar Water Sodium bicarbonate Sodium hydroxide Strong acid Weak acid Neutral Weak alkali Strong alkali

Draw the test tubes and colour Wear goggles! Hydrochloric acid Vinegar Water Sodium bicarbonate Sodium hydroxide Strong acid Weak acid Neutral Weak alkali Strong alkali

Draw the test tubes and colour Wear goggles! Hydrochloric acid Vinegar Water Sodium bicarbonate Sodium hydroxide Strong acid Weak acid Neutral Weak alkali Strong alkali

Quick Quiz! 1. What colour does litmus paper go when placed in acids?

Quick Quiz! 2. What colour do you expect the Universal indicator to turn?

Quick Quiz! 3. What colour do you expect the Universal indicator to turn?

Quick Quiz! 4. Lemon juice is a weak acid. Suggest its pH

Quick Quiz! 5. Water is neutral. Suggest its pH