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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

State What Information is Provided by the Formula of Calcium Hydroxide – Ca(Oh)2 - Chemistry

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प्रश्न

State what information is provided by the formula of calcium hydroxide – Ca(OH)2

तक्ता
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उत्तर

Compound Formula Information provide by formula
Calcium hydroxide ca(OH)2
  1. atom of calcium,
  2. atoms of oxygen and hydrogen
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पाठ 3: Elements, Compounds and Mixtures - Exercise

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संबंधित प्रश्‍न

Define :- Miscible liquids


Compare the properties of metals and non-metals with respect to

  1. alleability
  2. ductility
  3. electrical conductivity.

Is air a mixture or a compound ? Give three reasons for your answer.


What is meant by (i) homogeneous mixtures, and (ii) heterogeneous mixtures ? Give two examples of homogeneous mixtures and two of heterogenous mixtures.


Three mixtures A, B and C are obtained by stirring three different solids in water taken in separate beakers. When mixture A is allowed to stand for some time, then its particles settle at the bottom of the beaker. When a beam of light is passed through mixture A in a dark room, the path of light becomes visible when observed from the side of the beaker. When mixture B is allowed to stand for a considerable time, even then its particles do not settle down. Mixture B, however, scatters the beam of light just like mixture A. The particles of mixture C do not settle down on keeping and it also does not scatter a beam of light passing through it.

What are the mixtures like A known as ?

What are the mixtures like B known as ?

What are the mixtures like C known as ?

Name the phenomenon exhibited by A and B which occurs on passing a beam of light through them.

Name one mixture each which is like (i) A (ii) B, and (iii) C.


Define the following:

Impure substance


Name the components present in the following mixture:

Bronze


Differentiate between homogeneous and heterogeneous mixtures with suitable examples.


Give an example of each mixture having the following characteristics. Suggest a suitable method to separate the components of this mixture

Two volatile components with appreciable differences in boiling points.


A mixture of iron filings and salt is a ______ type of mixture.


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