Cellular catalysts Student activity Play

Changing the pH of arable soil Illustration Play

Chemical elements that make up black soil Illustration Play

Choosing an indicator for the titration of a weak acid or a weak base Student activity Play

Choosing an indicator for the titration of a weak acid or a weak base Chart Play

Choosing an indicator for the titration of a weak acid or a weak base Chart Play

Classification Whiteboard presentation Play

Colourful world of azo dyes Animation Play

Comparing the pH values for different solutions of the same concentration Animation Play

Composition of rocks Slideshow Play

Control and regulation of the organism Whiteboard exercise Play

Control and regulation of the organism Student activity Play

Determination of the acidic properties of ethanol Animation Play

Determining the water content of a sample of soil Animation Play

Do alcohols have acidic properties? Student activity Play

Dynamic equilibrium Student activity Play

Ecosystem = biocenosis + biotope Student activity Play

Effect of concentration on reaction equilibrium Student activity Play

Effects of terrestrial plants on the biosphere Slideshow Play

Electrophoresis of amino acids Student activity Play

Environmental factors necessary for germination Student activity Play

Enzymatic reactions Whiteboard exercise Play

Enzymatic reactions Student activity Play

Enzyme activity and environmental conditions Student activity Play

Enzymes are specific and selective (2) Student activity Play