Pure Substances and Mixtures — CHEMISTRY STD 6 — Question

_________ is the purest form of natural water.

Polluted air is harmful to ____.

All pure substance contain _____________ particles or group of particles.

The elements present in common salt are …………. And

If potassium nitrate is added to water in a beaker to give a homogeneous mixture, then potassium nitrate is referred to as the __________, water as the __________, and the homogeneous mixture as the _______.(solution/ solute/solvent/saturated solution)

Matter can change from one state to another by the change in ____

Oxygen and _______________ are necessary in the rusting of iron. [nitrogen/water vapour]

_________ is used to hold the test tube while-it is heated.

The _____________ the attractive forces between the particles of a substance.

______ and ______ can flow.