Gases Around Us

Through experiments we have discovered that:

 * Air has weight and is all around us

 * Powders and sponges are solid materials with air in the gaps in between particles

 * Soils have air trapped within them

 * Gases are formed when liquids evaporate

 * Gases are different from solids and liquids in terms of how they do not maintain their shape or volume

 * Gases have smells added to them to keep us safe

   

   

   

   

   

   

   

   

 * BUT ONE GAS, METHANE, CAN BE DEADLY!