PH Indicator. Why? and Observations  To check if the substance was acidic, neutral or basic  Different liquids changed different colors based on the.

Slides:



Advertisements
Similar presentations
Do now! Don’t forget you have a digestion test on Friday. Do some study whilst you are waiting.
Advertisements

PH and Indicators Chemistry Mrs. Coyle. Basic 14>ph>7 Neutral ph=7 Acidic 1
Warm-Ups: October 1-5, 2012 How to Write a Conclusion.
Year 7 starter: THINK of a sentence using at least 2 of the following keywords indicator red acid purple colour green alkali neutral bleach lemon juice.
Indicators and pH Objective:
INDICATORS & pH: Part 2 What is the difference between an acid and a base? Acid: H 3 O + (hydronium) ion Base: OH - (hydroxyl) ion Acids: react with metals.
In today’s STEM Lab You will be a Chemical Engineer We are Chemists at work mixing it up!
CHEMICAL TESTING. 1.Break up about 5 red cabbage leaves into small pieces (about 2cm x 2cm) 2.Put these cabbage pieces into your large cup or jug 3.Ask.
Strength of Acids and Bases. What makes a strong acid or base?  The strength of an acid or base is based on how many acid or base particles break down.
Bellringer What is an acid? What is a base?
The pH Scale.
Acids and Bases Lab Activity. Scientific Title: The effect of various solutions on pH level.
Lab: Investigating pH of Various Household Products
Acids, Bases, & ph Lab Page 101. Red cabbage waterRed cabbage water is an indicator of pH. Although it can't be used to determine exact pH, it can distinguish.
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 ?
Acids and Bases Lab Physical Science 8 January 2014.
Chapter 16 Acids and Bases. Target 1: I can label similarities and differences in acids and bases.
RED CABBAGE PH INDICATOR. THE PURPOSE OF THIS EXPERIMENT IS TO SHOW HOW TO MAKE YOUR OWN PH INDICATOR USING CABBAGE JUICE.
“Acids, Bases, and the pH Scale. Most substances you see are either an acid or a base. Distilled water is an exception. It is completely neutral. Pure.
Testing pH This is the title part This is the title part.
Acids and Bases. Acids  Acid- a compound that produces hydrogen ions in a solution. -Ex.- H combines with H2O to make H3O which is an acid. -The more.
Acidity and Alkalinity How do we tell an acid from a base and what is it good for?
Introduction to Acids and Bases What are they and how do we as scientists measure them?
L/O – To know how the pH scale can be used to show acids and alkalis
Measuring the pH Level in Household Substances Using Red Cabbage Juice as the pH Indicator Jocelyne Cortes Mrs. La Salle Chemistry/Period 3 5/28/2013.
 Read through all of the procedures on the lab handout before looking at the following pictures.
PH Review. The cause of a substance being acidic is… 20 1.pH pH Many Hydroxide ions 4.Many Hydrogen ions
Split Notes for Chemical Properties Key Terms 1.What is a chemical property? 2. What is reactivity? Explanations, Definitions, and Concepts 1.A chemical.
AB C D E F Do Now – Write down the given descriptions. Draw the picture that matches. 1. A pure substance – molecules only 2. Mixture – molecules and compounds.
pH Scale and Indicators
ACIDS AND BASES PH.
Red Cabbage Lab tacid/indicate.htm has very nice cartoons to explain acids, bases, and indicators.
Learning Check pH2 The [OH-] of a solution is 5 x M. What is the [H 3 O + ] of the solution? 1) 2 x M 2) 1 x M 3) 2 x M.
Purpose: To test the pH of different solutions using cabbage juice.
PH ( power of hydronium ion). The pH scale is a way of expressing the strength of acids and bases. Instead of using very small numbers, we just use the.
Acids and Bases Physical Science 8 January Human pH Scale (In-class activity)
Acids and Bases Notes. Scientists use a range of numbers, called a pH scale, to tell how acidic or basic a solution is.
Acids and Bases Michael O.. What are acids An acid is a substance that releases hydrogen ion when dissolved in water Things like vinegar or lemons are.
Acids and Bases. TITLE The effect of an indicator on determining the pH level of various substances.
Acids, Bases & pH. Acids Has positive hydrogen ions (H+) Has positive hydrogen ions (H+) Sour Taste Sour Taste Reacts with Metals and Carbonates Reacts.
Acids and Bases and You. Acids are… –Donate a hydrogen ion when mixed with another substance –H + -means it had a hydrogen to donate –Make foods taste.
Jeopardy ! Acids and Bases Titrations Indicators Neutral- ization pH and pOH Name the Acid Acid, Base, or Both.
Acids and Bases.
Indicators 8A1 – Thursday 26 Nov 2014.
Acids and Alkali Alex Cheong 1P404.
Substance A has a pH of 6. How should it be classified
Indicators General ST 2012.
Think, Pair, Share What can you tell me about acids and bases?
Complete the pH pre-lab questions
Lesson 4 Unit 2 Matter and its Properties
Natural Indicators What is the most effective indicator, with properties most similar to common indicator paper?
PH Indicator Problem 10: PH indicator Besat IYNT Team
Living By Chemistry SECOND EDITION
Natural Sciences Grade 7
Red Cabbage Indicator Year 7 Science.
Acids and Bases Chapter 23
Acids, Bases, & pH Section 2.6.
Acids & Alkalis Crossword
Acids and Bases.
Think, Pair, Share What can you tell me about acids and bases?
Testing for pH.
Page 75: Tuesday Jan 27th Write these directions:
Acids and Bases.
Aims of the Lesson I know that it is possible to make indicators to test for acids/alkalis from substances that could be found in the home. Indicators.
The pH Scale Scavenger Hunt
Definitions Indicators and Measurements
1/29/2014 Copy and Complete the following diagram: Bases Only
pH Scale Strengths of Acids and Bases
Jeopardy! Acids and Bases.
Presentation transcript:

pH Indicator

Why? and Observations  To check if the substance was acidic, neutral or basic  Different liquids changed different colors based on the pH  Lemon juice: pH: 2.25 color : light pink most acidic  Borax: pH : 9.43 color : light purple most basic

What we learned We learned how to test the acidity of different types of liquid using red cabbage juice as a pH detector We learned that the universal indicator says that red is the most acidic and the purple shade is the most basic