5th Class Science Matter and Materials Matter

Matter

Category : 5th Class

Matter

 

Tit bits

Water has more mass than kerosene even though though they both have same volume, water has more weight than kerosene.

 

Synopsis 

  • Any thing that has weight and occupies space is called matter.

 

  • Matter has mass and occupies space. Matter exists in three states: solid, liquid and gaseous states.                            

 

  • Matter is made up of tiny particles called a molecule. A molecule can be broken down further into smaller units called atoms.

 

  • In solids, the attraction between molecules is very strong. Solids have fixed shape, size and volume.

 

  • In a liquid, the attraction between molecules is not very strong, but molecules stay together. Liquids do not have a fixed shape and can flow freely.

 

  • In a gas, the attraction between molecules is very weak. So, in a gas, molecules move freely. They do not have a fixed shape or size.

 

  • One form of matter can be changed to another form by increasing or reducing the heat. Solids melt to form liquids. Liquids change into gases.

 

  • When a solute is dissolved in a solvent, a solution is formed.

 

  • The amount of space occupied by an object is called its volume.

 

  • The matter that makes up a body is called its mass.

 

  • Water is one of the few known substances which expands when it freezes. Thus, ice occupies more space than water.

 

  • The increase in the size of the matter on heating is called expansion

 

  • The decrease in the size of the matter on cooling is called contraction


 

Other Topics

Notes - Matter
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