Which of the following is not an element?
A. graphite

B. germaniumcc

C. silica

D. silicon

Write true or false for the following statements:

Metals are malleable, ductile, sonorous and lustrous.

One of the following substances is neither a good conductor of electricity nor an insulator. This substance is:

The property/properties which enable copper metal to be used for making electric wires is/are:

What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur?

An element is sonorous and highly ductile. Under which category would you classify this element? What other characteristics do you expect the element to possess?

Write true or false for the following statements:

Non-metals are lustrous and good conductors of heat and electricity.

Which of the following statements are true for pure substances?

(i). Pure substances contain only one kind of particles

(ii). Pure substances may be compounds or mixtures

(iii). Pure substances have the same composition throughout

(iv). Pure substances can be exemplified by all elements other than nickel

Why is sodium a metal whereas carbon non-metal?

Name one non-metal which is liquid.