Uses of non-metals

Question 1 Name one non-metal which is essential for maintaining life? Question 2 Name one non-metal used for making fertilisers? Question 3 Which non-metal is used in water purification? Question 4 Name non-metal used to make purple coloured solution which is applied on cuts and wounds as on antiseptic? Question 5 Name 2 non-metals which…

Uses of metals

Question 1 Name 2 metals which are used for making cooking utensils? Question 2 Name 2 metals which are used for making electric wires? Question 3 Name 1 metals which is used in thermometers? Question 4 Which metal is used to galvanise iron to protect it from rusting? Question 5 Name the metals which is used to make…

Displacement reaction

Question 1 What are displacement reactions? Question 2 Which metal is more reactive:iron or zinc? Question 3 What would you observe when a strip of zinc is dipped in copper sulphate solution? Question 4 What would you observe when a strip of iron is dipped in copper sulphate solution? Question 5 What would you observe when a…

Reaction of metals and non-metals with acid

Question 1 Why should the foodstuffs like orange juice,pickles,chutney should not be kept in iron or aluminium containers? Question 2 Name the gas evolved when metals react with acid? Question 3 What happens when magnesium metal react with hydrochloric acid? Question 4 What happens when zinc metal react with hydrochloric acid? Question 5 What happens when  iron…

Reaction of metals and non-metals with a base

Question 1 What happen when metals react with a base? Question 2 Name the gas evolved when metals react with a base? Question 3 Define the term reactivity series of metals? Question 4 Name the most reactive metal? Question 5 Name the least reactive metal? Question 6 What happen when aluminium react with a base?…

Reaction of metals and non-metals with water

Question 1 Name the gas evolved when a metal reacts with water? Question 2 What happen when metal react with water? Question 3 What happen when sodium react with water? Question 4 What happen when magnesium react with water? Question 5 Why sodium metal is stored under kerosene? Question 6 Why phosphorus is stored in…

Reaction of metal and non-metals with oxygen

Question 1 How do metal oxide differ form non-metal oxide? Question 2 An element forms an oxide which is acidic in nature.Is the element a metal or a non-metal? Question 3 An element forms an oxide which is basic in nature.Is the element a metal or a non-metal? Question 4 What happens when magnesium react with…

Difference between metals and non-metals

Question 1 How will you differentiate between metals and non-metals on the basis of physical properties? Difference between metals and non-metals            Metals               Non-metal 1)They are malleable They are not malleable 2)They are ductile They are not ductile. 3)They are good conductors of heat…

Properties of Non-metals

Question 1 Why non-metals are not malleable? Question 2 Why non-metals are not ductile? Question 3 Name one non-metal which is a good conductor of electricity? Question 4 Why graphite is used in making electrodes? Question 5 Write few properties of non-metals? Question 6 Name one lustrous non-metal? Question 7 What is brittleness? Properties of…

Properties of Metals

Question 1 Define the term malleability? Question 2 Define the term ductility? Question 3 Why cooking utensils are made up of metals? Question 4 Name 2 metals which are malleable? Question 5 Why metals are used in making jewellery? Question 6 Why metals are used for making bells? Question 7 Why iron is used in…

Characteristics of metals and non-metals

Question 1 What are metalloids.Give example? Question 2 Write few characteristics of metals? Question 3 write few characteristics of non-metals? Question 4 Give examples of metals? Question 5 Give examples of non-metals? Question 6 How many metals are known to us? Question 7 How many non-metals are known to us? Characteristics of metals 1)Metals are malleable….

Elements

Question 1 What are elements?Give example? Question 2 Define the term atom? Question 3 Name 2 types of elements? Elements A substance which cannot be broken down into two or more simpler substances by chemical reactions is called an element. For Example: Iron,hydrogen,helium,oxygen,phosphorus,sulphur,chlorine,bromine,gold,silver,mercury,aluminium etc. Every element is represented by symbol.All the elements have separate symbols.No…