Short Quiz in Science Seven

It is the simplified form of matter which cannot be decomposed by ordinary chemical.

• element

• compound

• mixtures

• metal

The following are the sources of oxygen except :

• earth's crust

• photosynthesis

• atmosphere

• wire

The following areexamples of element except :

• mixture

• carbon

• copper

• aluminum

This element is a good conductor of electricity

• Carbon

• Copper

• Aluminum

• Oxygen

Its the element that is called most essential element for life.

• Oxygen

• Carbon

• Hydrogen

• ALuminum

The symbol for Carbon is

(a)  

The symbol for Aluminum is

(a)  

The symbol for Gold is

(a)  

The symbol for Sodium is

(a)  

The symbol for Copper is

(a)