chemical reactions

It is the breaking up of bonds in the reactants molecules and formation of new bonds in the products (resultants) molecules from the reaction.

• chemical decomposition

• chemical reaction

• physical change

• physical interaction

chemical reactions which involve the

breaking up of the compounds with the effect of heat

into its primary elements or simpler compounds thán

the original ones.

• Thermal decomposition reactions.

• Thermal substitutions reactions.

• decomposition reactions.

• chemical reactions.

heating metal oxide produce :

• metal + oxygen gas

• metal + water vapor

• metal oxide + water

• metal oxide + carbon dioxide

heating cupper carbonate change its green color into new substance with ----- color

• blue

• brown

• white

• black

cupper sulphate has a ---- color

• white

• blue

• green

• black

sodium nitrate convert to ----- whit heating

• sodium nitrite

• sodium metal

• sodium oxide

• sodium hydroxide

SO3 gas produced when heating --------- :

• metal oxides

• metal hydroxides

• metal nitrate

• metal sulphates

yellowish - white substance produced when ________ decomposed thermally

• sodium hydroxide

• sodium nitrate

• cupper sulphate

• cupper hydroxide

black cupper oxide can be prepared by decomposing cupper ---------- thermally

• phosphate

• nitride

• sulphate

• oxide

HgO ---------> ----------- + -------------------

• silver metal + carbon dioxide

• silver metal + oxygen gas

• black metal + carbon dioxide

• white metal + carbon dioxide