Advertisements
Advertisements
प्रश्न
Define a pure substance. How many types of pure substances do you know?
Advertisements
उत्तर
Pure substances: “A substance of a definite composition which has consistent properties throughout, is called a pure substance” Types of pure substances: Pure substances are of two types
(i) Elements
(ii) Compounds
APPEARS IN
संबंधित प्रश्न
Give one example for the following types of mixtures :
misicible liquids
Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.
Fill in the blank
A metal which is a liquid at room temperature is _______.
Indicate whether the following statement is true or false:
Noble gases are high reactive
Write the names of elements from the following symbol:
Zn
Write the names of elements from the following symbol:
Br
Elements are broadly classified into metals and non-metals. State six general differences in the physical properties of metals and non-metals. State two metals and two non-metals which contradict with the general physical properties – giving reasons. State one difference in property between metalloids and noble gases.
Higher Order Thinking Skills.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
Water contains _____ and _____ element.
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
