Direction: Read the given passage and answer the following questions. Matters are made up of very tiny particles called molecules. Molecules in a solid are very tightly packed. Molecules in liquid and gas are loosely packed. The state of matter can change on heating or cooling. When solids are heated they turn into liquid and heating liquid can turn it into a gas. Matter is made of small particles called _____.

• A.  cells   
• B.                       molecules    
• C.  dust                
• D.           none