Question

I) ANSWER IN ONE WORD OR ONE SENTENCE

1) Which method is used to separate a mixture of naphthalene and common salt?

2) Name the phases in the separating funnel.

3) What is the covalency of nitrogen in N2 ?

4) Name an acid whose formula is H2CO3 .

5) Which symbol is used between reactant and product in a chemical reaction?

II) DEFINE THE FOLLOWING TERMS

1) Law of conservation of mass

2) Electrovalency

3) Atoms

4) Homogeneous mixture

5) Chromatography

III) ANSWER THE FOLLOWING QUESTIONS IN SHORT

1) What are the advantages of chromatography?

2) What is a balanced chemical equation ?

3) What are the rules for writing chemical symbols of elements(MENTION ONLY 2

POINTS)

4) What is Liebig condenser?

5) Write down the symbols for following elements:

a) Silver b) Gold

Jo mujhe answer batayga usko me follow karugi

but right answer please​

Answer 1

1) Sublimation method is used to separate a mixture of naphthalene and common salt.

2)Separatory funnel

3)Covalency of Nitrogen –

4)Carbonic acid

5)Writing Chemical Equations

Writing Chemical EquationsSymbol Description

Writing Chemical EquationsSymbol Description+ used to separate multiple reactants or products

Writing Chemical EquationsSymbol Description+ used to separate multiple reactants or products→ yield sign; separates reactants from products

Writing Chemical EquationsSymbol Description+ used to separate multiple reactants or products→ yield sign; separates reactants from products⇌ replaces the yield sign for reversible reactions that reach equilibrium

Writing Chemical EquationsSymbol Description+ used to separate multiple reactants or products→ yield sign; separates reactants from products⇌ replaces the yield sign for reversible reactions that reach equilibriumPt→ formula written above the arrow is used as a catalyst in the reaction

Define

1)the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy.

2)Electrovalency is the type of chemical bonding, that is established by the actual transference of one or more valence electrons.

3)An atom is the smallest unit of ordinary matter that forms a chemical element.

4)In chemistry, a mixture is a material made up of two or more different substances which are physically combined

5)Chromatography is a laboratory technique for the separation of a mixture.

Answer of the following-

1)

The Advantages of Chromatography

The Advantages of ChromatographyPrecise separation, analyses, and purification is possible using chromatography.

The Advantages of ChromatographyPrecise separation, analyses, and purification is possible using chromatography.It requires very low sample volumes.

2)

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae

3)

1. Each element is given its own chemical symbol, like H for hydrogen or O for oxygen.
2. like H for hydrogen or O for oxygen. Chemical symbols are usually one or two letters long.

4)The Liebig condenser or straight condenser is a piece of laboratory equipment

5) silver-Ag Silver 47

gold-au