Science Grade 7
Select Topic
7.1 Types of changes
7.2 Applications of chemical changes
7.2 Applications of chemical changes
7.2.1 Use of hydrocarbons as fuels
7.2.2 Use of fertilizers in agriculture
7.2.3 How does vegetable oil change into Fat
7.2.4 Plastics
7.3 Reversible and Irrevesible changes
