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ReactionBalanced Chemical ReactionSign of Chemical ReactionType of Chemical Reaction
KI(aq) + Ag(aq) → KNO3(aq) + AgI(s)KI(aq) + Ag(aq) → KNO3(aq) + AgI(s)Change in colour: into an opaque yellow

Liquid form

Solid cannot be seen

Double Displacement
CoCl2(aq) + Na2SO4(aq) → CoSO4(aq) + NaCl (aq)CoCl2(aq) + Na2SO4(aq) → CoSO4(aq) + 2NaCl (aq)No Reaction

both aq

No Reaction
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)A slight colour change: into a slight yellow

Heat present

Clear liquid

Double Displacement

–         Neutralization

CuSO4(aq) + MgCl2(aq) → CuSO4(aq) + MgCl2(aq)CuSO4(aq) + MgCl2(aq) → CuSO4(aq) + MgCl2(aq)No Reaction

Both aq

No Reaction
Na2SO4(aq) +  Na2CO3(aq) → Na2SO4(aq) + Na2CO3(aq)Na2SO4(aq) +  Na2CO3(aq) → Na2SO4(aq) + Na2CO3(aq)No Reaction

Same ionic ion in both compounds

No Reaction
NaOH(aq) + Fe(NO3)3 → NaOH (aq) + Fe(NO3)3(s)NaOH(aq) + Fe(NO3)3 → NaOH (aq) + Fe(NO3)3(s)No ReactionNo Reaction
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)Rusting

Liquid is a light yellow colour

Solid is an orange colour

The Solid looks as if it was dissolving or disintegrating

Precipitate formed

Single Displacement
AgNO3(aq) + Cu(s) → CuNO3(aq) + Ag(s)AgNO3(aq) + Cu(s) → CuNO3(aq) + Ag(s)Solid changed colours: from orange to gray

Little bubbles formed on the solid

Liquid seemed the same

Single Displacement
Fe(NO3)3(aq) + Cu(s) → Fe(NO3)3(aq) + Cu(s)Fe(NO3)3(aq) + Cu(s) → Fe(NO3)3(aq) + Cu(s)No ReactionNo Reaction
CoCl2*6H2O(s) → CoCl2(s) + H2O(g)CoCl2*6H2O(s) → CoCl2(s) + H2O(g)Changed colour: turned into a light blue/purple colour

Powder clumped together

Precipitate formed

Decomposition

–         Hydrate

CuSO4*5H2O(s) → CuSO4(s) + H2O(g)CuSO4*5H2O(s) → CuSO4(s) + H2O(g)Beige coluor change

Precipitate formed

Powder clumped together

Decomposition

–         Hydrate

CoCl2(s) + H2O(l) → CoCl2*6H2O(s)CoCl2(s) + 6H2O(l) → CoCl2*6H2O(s)Solid absorbed liquid

Colour change into a dark purple

Like it was before heated

Synthesis
CuSO4(s) + H2O(l) → CuSO4*5H2O(s)CuSO4(s) + 5H2O(l) → CuSO4*5H2O(s)Solid absorbed liquid

Colour change into turquoise

Like it was before heated

Synthesis
Ca(s) + S(s) → CaS(s)Ca(s) + S(s) → CaS(s)Yellow top/deep red bottom but after about 2 minutes all yellow test tube

Bright red flash

Precipitate formed

Odour created

Synthesis
Mg(s) + O2(g) → MgO(s)2Mg(s) + O2(g) → 2MgO(s)Extremely bright white flash

Product a brittle white chalky solid

Synthesis



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