MIXTURE

MIXTURE

What causes a fog? And what is the smoke? Where do the bubbles of soapy water come from?
These and other questions are answered by the students year seventh during the ecology lessons.
Experiments were made so simple way, the lead pupils to logical answers.

Fog is withheld water vapor in nature, which hovers above the ground surface. We may create a mist quickly and easily by simple experiment. We pour water into the sprayer and spray it into the air. Disperse spray water droplets in the air, produces a mixture which we call aerosol - fog.

Sugar dissolved in water is a homogeneous blend, which we call the solution - tea prepared for breakfast it is a solution.

Smoke is visible after blowing out the candles, which are small solid particles dispersed in air. We know for example smoke dust, smoke rising from smokestacks, smoke from cigarettes.
For experiment we light a candle, let it burn for a while and then blew out the flame - simple and self-evident. 

Water and jar forms a solution, blowing through a straw there is a diverse mix - foam (liquid substance is diffuse gaseous substance - air) and thereby ours bubbles.





What we set out to do, that pupils distinguish individual mix, mix base liquid and solid-liquid, or gaseous. New knowledge from the experiments can link to a normal life and have fun, we have fulfilled.