English

Define: Elements

Advertisements
Advertisements

Question

Define: Elements

Definition
Advertisements

Solution

Element is a substance which cannot be broken further into simpler substances and has a definite set of properties. Elements are made up of only one kind of atoms.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Elements, Compounds and Mixtures - Exercise 3 (A) [Page 24]

APPEARS IN

S.P. Singh Concise Chemistry [English] Class 8 ICSE
Chapter 3 Elements, Compounds and Mixtures
Exercise 3 (A) | Q 1.1 | Page 24

RELATED QUESTIONS

Name a soft metal.


Give one example for the following type of mixtures
solid-solid homogenous mixture.


Tick the most appropriate answer.

The constituents of a mixture are present in

  1. a fixed ratio
  2. a variable ratio,
  3. the ratio of 2: 1
  4. none of these

 Match the columns.

         column A           column B

1. to separate grain from chaff  

a. filtration 
2.  to saparate sawdust from water   b. sedimentation and deeantation 
3. to separate iodine from sodium chloride  c. winnowing 
4. to separate iron fillings from sand  d.sublimation 

5. it is used to separate sand and water 

e maganetic separation 

 

f .handpicking 

 


 Differentiate between the following.

Filter Paper and Alum


Give two applications of chromatography.


Give one use of the following substance:
Coal


Indicate whether the following statement is true or false:
Noble gases are high reactive


Match the statements in List I – 1 to 10 correct answers in List II-A to J.

  List I   LIst II
1 Fluorine and chlorine A Nitrogen
2 A diatomic molecule B Boron
3 A molecule containing the elements hydrogen and oxygen. C Reactants
4 A metalloid - showing properties of both metals and non-metals. D Chemical Formula
5 The term used for the substances which take part in the chemical reaction E Halogens
6 The term represents a  substance by means of symbols. F Water
7 The term used for the substances formed as a result of a chemical reaction G Nitric Acid
8 A compound containing one atom of zinc and two atoms of chlorine. H Products
9 The chemical name for nitrogen monoxide. I Phosphorus
10 A polyatomic molecule. J Zinc Chloride

 


Name the constituents of water.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×