Abundance of chemical elements in nature Student activity Play

Abundance of the elements in the crust and in the whole Earth Animation Play

Acids and alkalis Class activity Play

Alkaline earth metals Slideshow Play

Alkaline earth metals Student activity Play

Application of calcium hydroxide Animation Play

Aqueous solutions of bases Whiteboard exercise Play

Atomic number Student activity Play

Atomic number Whiteboard exercise Play

Balancing chemical equations and stoichiometry Animation Play

Bones and joints rebuilding Animation Play

Calcium carbonate Slideshow Play

Calcium carbonate cycle Animation Play

Calcium fluoride Animation Play

Calcium ions enter the synaptic knob Animation Play

Calculations involving the reactions of metals and water Whiteboard exercise Play

Calculations involving the reactions of metals and water Student activity Play

Changes in components of milk during pasteurization Whiteboard exercise Play

Chemical elements that make up black soil Illustration Play

Chemical equations Student activity Play

Chemical formula of the compound Animation Play

Cofactors Student activity Play

Comparing the reactivity of alkali metals and the alkaline-earth-metals Animation Play

Comparison of the reactivity of Group 1 and 2 metals Student activity Play

Components of plasma Slideshow Play