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

The symbol for Aluminum is

The symbol for Gold is

The symbol for Sodium is

The symbol for Copper is