Chemicals and chemical changes

Substances that retain the properties of their components

• Elements

• compounds

• Mixtures

• Salts

The process used in obtaining common salt from sea water

• Melting

• Crystallization

• Neutralization

• Boinling

Which of the following is not an example of chemical change?

• sour milk

• burning wood

• breaking a pencil

• rust

A change in phase ...

• Chemical Change
• Physical Change

What is the valency of Aluminium ?

The chemical name of rust is

Choose a salt from the compounds given

• Vinegar

• Caustic soda

• Slaked lime

• Baking soda

Write a tetra atomic element

Which of the following is not an example of a physical change?

• crumpled paper

• dissolving sugar in water

• freezing water

• burning a marshmallow

Is milk going sour a physical or chemical change?

• Physical

• Chemical