Title نسخة من مكمل سكند .pdf ✅

مكمل مادة السكند
Q1) Classify as soluble or insoluble in aqueous solution. 1-NH4Cl 2-AgCl 3-Ba(NO3)2 4-FeS 5-KI 6- CaCO3 Q2)What’s the type of this reaction Pb(NO3)2(aq) + 2 KI(aq)→ PbI2(s) + 2KNO3(aq) a) precipitation b) Exchange c) neutralization d) Displacement Q3) What’s the type of this reaction HCl(aq) + NaOH(aq) → NaCl (aq) + H2O(l) a) precipitation b) Exchange c) neutralization d) Displacement Q4) The substance disintegrates ions when it is dissolved in water. a) electrolyte b) none electrolyte c) week electrolyte Q5) a compound that does not conduct an electric current in either aqueous solution a) electrolyte b) none electrolyte c) week electrolyte Q6) The substance dissolves in water and conducts electricity poorly a) electrolyte b) none electrolyte c) week electrolyte 1 Soluble 2 In soluble 3 Soluble 4 In Soluble 5 Soluble 6 In Soluble
Q7) What’s the type of this reaction : HCl + Mg(OH)2 → MgCl2 + H2O a)precipitation reactions b) exchange reaction c) neutralization reactions d) oxidation reaction Q8) Type of Reaction for CaO + H2O → Ca(OH)2 a) exchange reaction b) oxidation reaction c)combination reaction d) decomposition reaction Q9) Type of Reaction for Ca(OH)2 → CaO + H2O a) exchange reaction b) oxidation reaction c)combination reaction d)decomposition reaction Q10) ) Type of Reaction for NaCl +AgNO3 → NaNO3 +AgCl is a)precipitation reactions b) exchange reaction c) neutralization reactions d) oxidation reaction Q11) both names for the reactions in which cations and anions appear to exchange partners. a) precipitation reactions b) exchange reaction c) neutralization reactions d) oxidation reaction Q12) the amount of a substance that can be dissolved in a given quantity of solvent at a given temperature a) solution b)molarity c) solubility d) net ionic Q13) Ions that appear in identical forms on both sides of a complete ionic equation a)neutral ions b)net ionic equation c)spectator ions
Q14) reactions that result in the formation of an insoluble product a) precipitation reactions b) exchange reaction c) neutralization reactions d) oxidation reaction Q15) Determine the oxidation number of sulfur in S8 a) +1 b) -1 d) 0 c) +2 Q16) what is the oxidation number of N in HNO3? a) +5 b) -5 c) 0 d) +4 Q17) What is the oxidation number of N in NaNO3 a) +1 b) -1 c)+5 d)-5 Q18) What is the oxidation number of P in (H2PO2) -1 a) +1 b) -1 c) +2 d) -2 Q19) What is the oxidation number of O in O2F2 a) -1 b) -2 c) +1 d) +2 Q20) What is the oxidation number of O in H2O2 a) -1 b) -2 c) +1 d) +2 Q21) What is the oxidation number of K+ a) -1 b)+1 c) 0 d)+2 Q22) What is the oxidation number of SO4 -2 a) +2 b) 0 c)+1 d) -2 Q23)answer the following of this reaction : Mg +Br2 → MgBr2 Na :+1 // N: X // O3 =-6 +1 + -6 +X = 0 X= +5 1- Mg is ............. 3- Reducing Agents is ........ a) oxidized b) reduced a)Mg b)Br2 c)Mg+2 d)Br- 2- Br2 is .......... 4- Oxidizing agent is ........ a) oxidized b) reduced a)Mg b)Br2 c)Mg+2 d)Br-