SCIENCE 12/06/2020 VIRTUAL ONLINE CLASSES CH-4 METALS AND NON-METALS CLASS DETAILS AND CLASS HOME WORK

SCIENCE 
12/06/2020
VIRTUAL ONLINE CLASSES

CH-4 METALS AND NON-METALS

TOPIC TAUGHT:
  • CHEMICAL PROPERTIES OF METALS AND NON-METALS(Today Cont...)
SUB_TOPIC:
  • Metals reacts with Acid
  • Non-Metals reacts with Acid 
NOTE:

Watch Video no.5 and Video.no.3 from between us portal.


HOME WORK:
  
Q.1 Fill in the Blanks:

1. Most metals react with dilute _______ acids to form their salts and liberate hydrogen gas. 
2.The hydrogen gas liberated does not support burning but itself burns with a _____ sound.
3.Metals react with dilute hydrochloric acid to form _________ salts.
4.Sulphur reacts with hot concentrated nitric acid and forms sulphuric acid and _______ gas.
5.Metals react with dilute sulphuric acid to form ________ salts.


Q.2 Answer the following questions:

1.Write the chemical  reaction of sodium reacts with dil.hydrochloric acid.
2.Write the chemical reaction of magnesium reacts with sulphuric acid.
3.Write the chemical reactions of Iron reacts with hydrochloric acid.
4.Write the Chemical reactions of Sulphur reacts with hot concentrated nitric acid.
5.Write the Chemical reactions of Phosphorus reacts with hot concentrated nitric acid.

Q.3 State whether the following is true or false:

1.Non-metals generally do not react with acids.
2.sulphur and phosphorus react only with hot concentrated acids. 
3.Metals react with dilute nitric acid to form chloride salts.
4.Mineral acids are inorganic acids like hydrochloric acid, sulphuric acid, nitric acid.






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