LAWS OF CHEMICAL COMPOSITION

 There are two laws of chemical composition 

  1. Law of conservation of mass
  2. Law of constant proportions 

Law of conservation of mass



Law of conservation of mass state that mass can neither be created nor destroyed in a chemical reaction.
Example:- 2grams of hydrogen react with 16grams of oxygen to produce 18grams of water. The total mass in the reactant and total mass in the product is same.

Law of constant proportions

Law of constant proportions state that in a chemical substance the elements are always present in a definite proportion by mass.
Example:- in water the ratio of mass of hydrogen to the mass of oxygen is always 1:8. That means 1grams of hydrogen need 8grams of oxygen to react together and form 9gm of water. 

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WORKING MODEL FOR SCIENCE EXHIBITION- DANCING BALLOON

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This blog contents are specifically for high school students all over the world . Those who are preparing for GCSE physics and GCSE chemistry have lot of topic to refer from this blog. PHYSICS   CHEMISTRY   SCIENCE IN DAILY LIFE  SCIENCE EXHIBITION PROJECTS 
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ELECTRIC CHARGES

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MAGNETS

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Magnets are substances which can attract some materials like iron, steel, nickel etc.  Different types of magnets  Based on shape of the magnets we can classify magnets into different names. Pictures and names of som magnets are given below                   A magnet always has 2 poles a north pole and a south pole ( when a magnet is cut into two pieces, the new pieces formed will act as separate magnets with a north pole and south pole for each                                     
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