Shake your Acids, Bases and           Salts!
IntroductionWe daily use in our life a large number of  substances such as lemon, tamarind,common salt, sugar, vinegar etc...
Learning Objectives•To classify the common householdsubstances if they are acids, bases orsalts.•To determine the pH of th...
A Brief Overview of Acids and Baseshttp://www.youtube.com/watch?v=tNvP3-174_M          Watch the short clip
Preliminary Task   Search for any substance that you     can see outside and inside the   school premises and bring it in ...
Facilitators                          Hi I’m Super A, I will help                           you understand Acids!         ...
Hello Kids! Today we will discuss     Acid                    An acid is a substance that gives H+ (Hydrogen) ions        ...
Based on the video that you had watched earlier,                      can you identify the characteristics of an acids?The...
Some common examples of an Acids are:1. Explosives2. Car Batteries3. Cola4. Vinegar       Explosives and car batteries are...
Now, lets go on with Base. A Base is asubstance that gives OH- (hydroxide)  ions when dissolved in water. The solution of ...
Based on the video that you had watched earlier,                      can you identify the characteristics of a Bases?  Th...
Some common examples of Bases are:1. Drain cleaner2. Plaster3. Baking powder4. Windex glass cleaner       Drain cleaner an...
Reactions between acids and bases                  When and acid and a base react with each                 other, the cha...
NeutralizationHCl    +   NaOH       →      H 2O   +   NaClacid   +   base       →     water   +   salt
An indicator is a compound that will change colorin the presence of an acid or base• Red Litmus paper turns blue in base• ...
pH stands for “potential hydrogen” and is ameasure of how many H+ ions there are insolution.        The MORE H+ there are,...
pH Scale                    Shows the range of H+                       concentrations                                    ...
A Salt results when an acid reacts with a base.The H+ and OH- ions combine to form water. Thisprocess is called as neutral...
The following are the characteristics of Salts:• Salts can be of several different colors• Usually salts are odorless•Salt...
Some common examples of Salts are:1. Toothpaste2. Kitchen Salt
Activity
Summary       Acid is a substance that gives H+ (Hydrogen) ions when dissolved inwater. Acids have a sour taste, reacts wi...
Assignment        Look for other 15 household            substances, check its      ingredients and identify why it is    ...
Referencehttp://schooltutoring.com/help/three-important-types-of-chemicals-acid-bases-salts/http://www.shodor.org/unchem/b...
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Shake your acids, bases and salts

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Acids, Bases and Salts

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  • Salts
  • Watch the short clip
  • Search for any substance that you can see outside and inside the school premises and bring it in the classroom. Be back after 15 mintues.
  • New Friends, New Learning
  • pH greater than 7
  • Kitchen Salt
  • Shake your acids, bases and salts

    1. 1. Shake your Acids, Bases and Salts!
    2. 2. IntroductionWe daily use in our life a large number of substances such as lemon, tamarind,common salt, sugar, vinegar etc. Do they have same taste? You find that some of these taste sour, some bitter, some sweet and some salty.
    3. 3. Learning Objectives•To classify the common householdsubstances if they are acids, bases orsalts.•To determine the pH of the substances.•To describe the result of theinvestigation and characteristics of eachsubstance.
    4. 4. A Brief Overview of Acids and Baseshttp://www.youtube.com/watch?v=tNvP3-174_M Watch the short clip
    5. 5. Preliminary Task Search for any substance that you can see outside and inside the school premises and bring it in the classroom. Be back after 15 minutes.
    6. 6. Facilitators Hi I’m Super A, I will help you understand Acids! My name is Super B, I will help you know Bases! And you can call me Super S, I will help you understand Salts!
    7. 7. Hello Kids! Today we will discuss Acid An acid is a substance that gives H+ (Hydrogen) ions when dissolved in water. They are usually compounds of non metals with Hydrogen and sometimes Oxygen. Hi Super A!
    8. 8. Based on the video that you had watched earlier, can you identify the characteristics of an acids?The following are the characteristics of Acids:• Acids have a sour taste• Acids reacts with metals•Acids contains Hydrogen• Many are poisonous and corrosive to skin.• It has a pH less than 7
    9. 9. Some common examples of an Acids are:1. Explosives2. Car Batteries3. Cola4. Vinegar Explosives and car batteries are strong acidswhile cola and vinegar are weak acids.
    10. 10. Now, lets go on with Base. A Base is asubstance that gives OH- (hydroxide) ions when dissolved in water. The solution of a base in water is called an alkali.
    11. 11. Based on the video that you had watched earlier, can you identify the characteristics of a Bases? The following are the characteristics of Bases:• Bases usually taste bitter• Strong Bases are also poisonous and corrosiveto learning• Bases contains Hydroxide ions• Bases feel slippery•It has a pH greater than 7
    12. 12. Some common examples of Bases are:1. Drain cleaner2. Plaster3. Baking powder4. Windex glass cleaner Drain cleaner and plaster are strong baseswhile baking powder and Windex glass cleaner areweak bases.
    13. 13. Reactions between acids and bases When and acid and a base react with each other, the characteristic properties of both are destroyed. This is called neutralization. General formula for acid base reaction: Acid + Base H2O + Salt “Salt” means any ionic compound formed from an acid/base reaction
    14. 14. NeutralizationHCl + NaOH → H 2O + NaClacid + base → water + salt
    15. 15. An indicator is a compound that will change colorin the presence of an acid or base• Red Litmus paper turns blue in base• Blue Litmus paper turns red in acid• Universal indicator (pH paper) Used for the full pH range
    16. 16. pH stands for “potential hydrogen” and is ameasure of how many H+ ions there are insolution. The MORE H+ there are, the LOWER thepH will be.
    17. 17. pH Scale Shows the range of H+ concentrations Low H+ concentrationHigh H+ concentration
    18. 18. A Salt results when an acid reacts with a base.The H+ and OH- ions combine to form water. Thisprocess is called as neutralization. The non metallic ions of the acid and themetal ions of the base form the salt. Acid + Base —-> Salt + Water
    19. 19. The following are the characteristics of Salts:• Salts can be of several different colors• Usually salts are odorless•Salts have pH = 7. They are neutral
    20. 20. Some common examples of Salts are:1. Toothpaste2. Kitchen Salt
    21. 21. Activity
    22. 22. Summary Acid is a substance that gives H+ (Hydrogen) ions when dissolved inwater. Acids have a sour taste, reacts with metals and contains Hydrogen.Many are poisonous and corrosive to skin. It has a pH less than 7 and turnsblue litmus paper to red. Some of the common examples of an acid are carbatteries, explosives, cola, vinegar, etc. While Base is a substance that gives OH- (hydroxide) ions whendissolved in water. The solution of a base in water is called an alkali. Itusually taste bitter, contains Hydroxide ions, feel slippery and strong basesare also poisonous and corrosive to learning. It has a pH greater than 7 andturn red litmus paper to blue. Some common examples are glass/draincleaner, baking powder, plaster, etc. Salt results when an acid reacts with a base. The H+ and OH- ionscombine to form water. This process is called as neutralization. Salts can beof several different color , usually odorless and have pH = 7. Some commonexamples are toothpaste, kitchen salt, etc.
    23. 23. Assignment Look for other 15 household substances, check its ingredients and identify why it is an acid, base or salt. Give its formula if possible.
    24. 24. Referencehttp://schooltutoring.com/help/three-important-types-of-chemicals-acid-bases-salts/http://www.shodor.org/unchem/basic/ab/http://www.knockhardy.org.uk/sci_htm_files/08SALTS.PDFhttp://www.slideboom.com/presentations/546519/ACIDS,-BASES-%26-SALTS

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