Question

Metals and non metals form bases and acids respectively.comment

Answer 1

Reaction with Acids

Metals generally react with acids and produce hydrogen gas. Confirmation of hydrogen gas is done by bringing a burning matchstick or a burning candle near the gas. When the burning matchstick or candle burns with a pop sound it confirms the evolution of hydrogen gas.

Metal + Acid → Salt + Hydrogen

Copper does not react with even concentrated hydrocholoric acid. However, copper reacts with sulphuric acid.

Non-metals generally do not react with acids.

Reaction with Bases

Metals react with sodium hydroxide to produce hydrogen gas.

Metal + Sodium hydroxide → Hydrogen

Non-metals’ reaction with sodium hydroxide is much complex.

Displacement reactions

When a metal displaces another metal from a compound; this is called displacement reaction. In this reaction, a more reactive metal displaces a less reactive metal from a compound.

Reactivity Series: Metals can be arranged in chronological order; on the basis of their reactivity. Such an arrangement of metals is called reactivity series of metals. Sodium and potassium are at the top of the reactivity series. Gold and silver are at the bottom of reactivity series.

Answer 2

IN OXYGEN.

Explanation:Metal:Metals react with oxygen to form metal oxide, which is basic in nature.

For example : sodium +oxygen =sodium oxide.

Copper +oxygen =copper oxide.

Non metals: non metals react with oxygen to form non metallic oxide,which are either acidic or neutral in nature.

For example : carbon + oxygen (excess) =carbon dioxide .

Nitrogen + oxygen = nitrogen dioxide.