chem

Flame test - red

Lithium

Flame test - Orange

Calcium

Flame test - yellow

Sodium

Flame test - purple

Potassium

Flame test - green

Barium

Flame test - blue

Copper

When a solution turns red litmus paper blue during the electrolysis of aqueous sodium chloride, what substance causes this color change?

Sodium hydroxide

How much % of nitrogen is there in the atmosphere?

78%

How much percent of oxygen is there in the atmosphere?

21%

How much percent of noble gases, CO2 and water vapor is there in the atmosphere?

1%

Process of separating petroleum into useful) products?.

Fractional distillation

What is cracking?

The break down of bigger hydrocarbons into smaller ones by heating them in the presence of a catalyst

Thermal decomposition

A chemical reaction which occurs due to heat breaking down a compound

Properties of transition Metals?

• High melting points

• acts as a catalyst

• Forms colored compounds

Chemical test for water

blue cobalt chloride

Ethanol is formed by which process?

Fermentation