The document is a presentation on acids, bases, and salts, detailing their properties, reactions, and significance in everyday life. It explains testing methods for acids and bases, their reactions with indicators, and their effects on soil pH, digestion, and dental health. Additionally, it covers the formation of salts, including the differences between strong and weak acids and bases, as well as applications of various chemical compounds.

1. Jaspreet Kaur
PowerPoint Presentation
E-Content on
Acids, Bases & Salts

2. What are Acids?

6. Reaction b/w Acid & Base

7. Testing of Acids & Bases

8. How we test for ACID…….,
First step Second step

9. How we test for Base…….,
First step Second step

10. How it reacts with Indicator?
Burette
Flask
Adding
phenolphthalein

11. How it reacts with Indicator?
Adding
Methyl Orange

12. Testing of Acids & Bases by pH Level

13. Testing of Acids & Bases by pH Level

14. Testing of Acids & Bases by pH Level

15.  Are plants and animals are pH sensitive.
 In soil pH level is important.
 It is important to maintain pH of our digestive system.
 pH changes the cause of tooth decay.
 Self defence by animals and plants through chemical welfare.
Importance of pH in everyday life

16. Reaction of Acids & its compounds with Metals
2NaOH + Zn -------> Na2 ZnO2 + H2
Sodium Zincate

17. Reaction of Acids & its compound with Metals
Test tube A : Na 2CO 3 (s) + 2HCl (aq)  2NaCl (aq) + H 2O (l)+ CO 2 (g)
Test tube B : NaHCO 3 (s) + HCl (aq)  NaCl (aq) + H 2O(l) + CO 2 (g)
On passing the CO 2 gas evolved through lime water.
Ca(OH)2 (aq) + CO2 (g)  CaCO3 (s) + H2O (l)
White precipitate

18. Comparison of properties of ACIDS & BASES
ACIDS
 Acids are Proton donor &
electron acceptor.
 Sour in taste.
 Change litmus paper to red.
 React with metal
carbonate, hydrogen
carbonates.
 React with metallic oxides.
 When acid react with Water
it give H+ ion.
BASE
 Base are Electron donor &
proton acceptor.
 Bitter in taste.
 Change litmus paper to blue.
 React with metals (Al, Zn, Cr).
 React with oxides, hydroxide.
 When base react with Water
it give OH- ion.

19.  Salt are formed by mixing Acid and Base in Reaction.
 Salts having the same positive or negative radicals .
 Salts of strong acid & a strong base are NEUTRAL with pH value of 7. On the other
hand, salts of a strong acid & weak base are acidic with pH value less than 7 & those
of a strong base & weak acid are basic in nature with value more than 7.
 Some Salts are naturally occur. For example- Common Salt.
 Some salts are make by using chemicals and use in large scale.
It is used as for commercial and industrial purposes.
For Example- 1. NaOH 2. Bleaching Powder. 3. Baking Soda 4. Washing Soda
What are Salts?

20. Reactionhttp://www.dailymotion.com/video/xxhyct_class-vii-
acids-bases-and-salts-indicators_school.MOV
https://www.youtube.com/watch?v=ujkuW-0cpNw
https://www.youtube.com/watch?v=cAeP3mI1DdU
http://www.dailymotion.com/video/xxhyct_class-vii-acids-bases-and-salts-
indicators_school