Discovery of elementary particles Student activity Play

Discriminant of the equation ax 2 + bx + c = 0 Student activity Play

Discs in the coordinate system Student activity Play

Disease Student activity Play

Diseases and hygiene of the eye Student activity Play

Diseases caused by atherosclerosis and arterial hypertension Student activity Play

Diseases caused by tobacco-smoking Student activity Play

Diseases of the respiratory system Student activity Play

Dispersion forces (London forces) Student activity Play

Dispersion of light Student activity Play

Dispersion of light from a diffraction grating Student activity Play

Displacement and distance Student activity Play

Displacement of metals from solutions of their salts by other metals Student activity Play

Displacement reactions Student activity Play

Displacement reactions Student activity Play

Displacement reactions Class activity Play

Displacement reactions among the halogens Student activity Play

Displacement vector Student activity Play

Displacement, distance and velocity Class activity Play

Displacements Student activity Play

Display devices Student activity Play

Dissociation constants for di- and triprotic acids Student activity Play

Dissociation constants of conjugate acids and bases Student activity Play

Dissociation of acids Student activity Play

Dissociation of acids, bases and salts Class activity Play

Dissociation of bases Student activity Play

Dissociation of weak acids and weak bases Student activity Play

Dissolution Student activity Play

Dissolution of gases in water Student activity Play

Dissolution of solids in water Student activity Play