Metals let us see your perfomrance

Metals let us see your performance

Quizzing them all!

Multiple Select

With suitable concentration which gas(es) can be evolved with the 3 common acids with zinc?

• hydrogen

• nitrogen monoxide

• nitrogen dioxide

• sulphur dioxide

• sulphur trioxide

Multiple Select

With suitable concentration which gas(es) can be evolved with the 3 common acids with aluminum?

• hydrogen

• nitrogen monoxide

• nitrogen dioxide

• sulphur dioxide

• sulphur trioxide

Multiple Select

With suitable concentration which gas(es) can be evolved with the 3 common acids with silver?

• hydrogen

• nitrogen monoxide

• nitrogen dioxide

• sulphur dioxide

• sulphur trioxide

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Name the reason which stops the dissolution of copper in hydrochloric acid?

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Name the reason which stops the dissolution of iron in cc. sulphuric acid?

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Name a metal stored under petroleum?

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Give the chemical symbol of a brittle metal?

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What "common name" is used for concentrated nitric acid?

Identification of Metals

Analytical question

Make notes!

In five closed glass bottles five metals are stored: aluminum, gold, sodium, copper and iron plate. While examining their physical properties and their dissolution in acids, the following observations were made:

The metal in bottle “A”:

It has a metallic color and it is dissolved both in water and

hydrochloric acid.

The metal in bottle “B”:

It is not dissolved in water and concentrated nitric acid, but it is dissolved in hydrochloric acid. The solution obtained after dissolution has a light green color.

The metal in bottle “C”:

The metal has a reddish color. It is not dissolved in water and hydrochloric acid, but it is dissolved in concentrated nitric acid while a reddish brown gas is produced.

The metal in bottle “D”:

The metal has a low density and a (light) metallic color. It is not dissolved in water and concentrated nitric acid, but it is dissolved in hydrochloric acid. The solution obtained after dissolution is colorless.

Multiple Choice

Which metal is in which bottle A?

• aluminum

• gold

• sodium

• copper

• iron

Multiple Choice

Which metal is in which bottle B?

• aluminum

• gold

• sodium

• copper

• iron

Multiple Choice

Which metal is in which bottle C?

• aluminum

• gold

• sodium

• copper

• iron

Multiple Choice

Which metal is in which bottle D?

• aluminum

• gold

• sodium

• copper

• iron

Multiple Choice

Which metal is in which bottle E?

• aluminum

• gold

• sodium

• copper

• iron

Fill in the Blanks

Write the reaction of the metal stored in bottle “A” with water.

Fill in the Blanks

Write the reaction of the metal stored in bottle “B” with hydrochloric acid.

Fill in the Blanks

Formulate the gas produced at the dissolution of the metal stored in bottle “C”!

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At the dissolution of the metal stored in bottle “D”, a gas is evolving. Name of the evolving gas:

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What is the color of the metal stored in bottle “E”?

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Which reagent can dissolve the metal stored in bottle “E?

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One of the five metals can not be exposed to open air, not even for a short time.

Which one is it?

Open Ended

How should this metal be stored?

Multiple Select

Two of the five metals can be dissolved in diluted nitric acid, but they are not

dissolved in concentrated nitric acid.Which two? Why are they not dissolved in the concentrated

solution?

• aluminum

• iron

• gold

• sodium

• copper

Fill in the Blanks

Why are they not dissolved in the concentrated

solution?