4.1 Physical Properties of Metals and Non-metals
4.2 Chemical Properties of Metals and Non-metals
4.3 Uses of Metals and Non-metals
NCERT solutions for class 8 science chapter 4 Material Metals And Non-Metals
The main points to be noted after going through NCERT solutions for class 8 science chapter 4 material metals and non-metals
Metals are lustrous whereas non-metals are not.
Generally, metals are malleable and ductile. Non-metals are not malleable and not ductile.
Metals are good conductors of heat and electricity whereas non-metals are poor conductors.
Mercury is a liquid metal
Metals react with oxygen to produce metal oxides which are basic in nature. Non-metals react with oxygen to produce non- metallic oxides which are acidic in nature. Certain questions based on this are given in CBSE NCERT solutions for class 8 science chapter 4 material metals and non-metals.
Some metals react with water to produce metal hydroxides and hydrogen gas. Generally, nonmetals do not react with water.
Metals react with acids and produce hydrogen gas and metal salts. Generally, non-metals do not react with acids.
Some metals react with bases to produce hydrogen gas
More reactive metals displace less reactive metals from their compounds in aqueous solutions.
Q3. Fill in the blanks.
(a) Phosphorus is a very _________ non-metal.
(b) Metals are________ conductors of heat and ________ .
(c) Iron is__________ reactive than copper.
(d) Metals react with acids to produce________ gas.
Q7. Can you store lemon pickle in an aluminium utensil? Explain.
Q9 (a). What happens when
Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.