Which statement best describes the properties of anxf 848;o vnj*2o2pmlmkc+n bg alloy?

  Which statements regarding allurnsu anirf9;lv+v20 x 4xn29 oys are correct?
I.Alloys are a solid solution held together with metallic bonds
II.Because the lattice contains differing-size ions, the metallic bonds are weaker
III.Alloys can have different chemical properties than their component elements

  The respective names of the monomer and polymer in the below polymeriz1iggm 9n :qyr mzlpf/exz1*i6 zw2; a)ation reactiog a9*/ 6wrqn:myzl;ei1x1z2 )imfgpzn are:

  1.Write balanced che u . 1hu.faqdqmd2ws(b 0tv7)hmical equations for the reactions below:
.1.Combustion of decane in excess of oxygen.
.2.Combustion of butane in a limited supply of oxygen.
.3.Complete combustion of ethanol.
2.Specify the test and its result to identify the presence of a double bond in ethene ($C_2H_4$) Support your answer with a balanced chemical equation.
3.Write an equation to show the polymerization of ethene and write the name of the polymer.The name is   

  What type of type of bonding 3-em .pkh4eimyq8 x0 sjfd;i: is present in $SiO_2$ , and what is the approximate percent covalent character?

Refer to Sections 9 and 17 of the data booklet.

  Iron (II) oxide,FeO, is one ow ce, ;*k. *-ywuuzsqjf the most abundant compounds in Earth’s crust at nearly 9% by m.y*wjuu,s -w* cq; ekzass.
Refer to Sections 9 and 17 of the data booklet for this question.
1.Calculate the electronegativity difference between iron and oxygen in FeO. The mumber=  .
2.Use Δx and the average x to identify the bond type that exists between iron and oxygen in FeO.Average electronegativity =  .
3.Iron can also exist as a $Fe^{3+}$ion ,resulting in iron (III) oxide when bonded to oxygen. Describe how the bond type differs in FeO compared to $Fe_2O_3$.

  A compound has 74% covalent character where one of the atoms in the t6djsl) ngf+l*jg3 t7bond has an electronegativity equal to 2.3. What is7)+jt3ld*n lfj6gt gs the electronegativity of the other atom?

Refer to Section 17 of the data booklet.

  A polymer P has a repeat unit with the following structural formula.ma6f6 ss(rzfumx4)3e

1.State whether the carbon atom labelled with an asterisk (*) is  ----待选择----primarysecondarytertiary 
2.Polymer P is produced via the addition polymerisation of compound A.
.1.Draw the full structural formula of compound A.
.2.Compound A has two structural isomers that contain the same functional groups. State the IUPAC names of compound A and both structural isomers.
Compound A = but-  -ene;Isomers = but-  -ene
.3.State the observation when compound A is mixed with aqueous bromine.
.4.An organic compound can also be identified by measuring the mass of carbon dioxide and water produced when each gram of the compound undergoes complete combustion. The equation for the combustion of another compound B is shown.
B + 12$O_2$ → 8$CO_2$ +8$H_2O$
Explain why compound A could not be distinguished from compound B using this method.

  What properties would be characteristic of a materia mie.d12p+ - qrrxpbg5l with an electronegativity difference of 2.2 and an average el.5ppex-qrbm1r ig+d 2ectronegativity equal to 1.8?
Refer to Section 17 of the data booklet.

  Which of the following is the correct o wv4df)lty6;a rder for % ionic character from highest to lowest for the following comptvly4)aw ;6f dounds?