Real gases Animation Play

Real gases Student activity Play

Reasons for the high reactivity of alkenes Whiteboard exercise Play

Reasons for the high reactivity of alkenes (1) Student activity Play

Reasons for the high reactivity of alkenes (2) Student activity Play

Recommended daily protein intake according to sex and age Illustration Play

Reforming of crude oil Whiteboard exercise Play

Reforming of crude oil Student activity Play

Regulation of blood pH – the role of the kidneys Student activity Play

Regulation of gene expression in prokaryotes – operons Student activity Play

Regulation of the synthesis of enzymatic proteins Student activity Play

Relative abundance of isotopes and mass spectra Student activity Play

Relative molecular mass Student activity Play

Relative molecular mass Animation Play

Resonance energy for benzene Animation Play

Reversible and irreversible reactions Student activity Play

Reversible reaction Animation Play

Risk factors for coronary heart disease Student activity Play

Role of bacteria in digestion and in the production of vitamins Student activity Play

Role of bacteria in the large intestine Slideshow Play

Role of cations in plant cells Slideshow Play

Role of macro-elements absorbed as anions Student activity Play

Role of macro-elements absorbed as cations Student activity Play

Rupture of the DNA molecule Slideshow Play

Salts of strong acids and weak bases Student activity Play