Which statement best describes the properties of an alloy?q)9:hd6s i jjwny8 )qo

  Which statements regarding alloys are corr6 -drxt/1p cn+ci )hwrect?
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 anq2:vkf by *:vyd polymer in the below polymerization reaction are:: b2v*yyq vfk:

  1.Write balanced chemical som3 ln:)97phfju7c wncu t1 (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; jzl6ffuo*/yfi :ru56p,:d(o sm zhrt 9bvm0 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 of the most abundant compounds in Earth’s crust atlidk8 6d )8s 4spqz6ry nearly 9% by 6p qds)8d8rziyk64ls mass.
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 thedhzj e+ s0b. rj*x*a,j atoms in the bond has an electronegativity equal to 2.3. What*+xz ,.a*0 jjdbsjher is the electronegativity of the other atom?

Refer to Section 17 of the data booklet.

  A polymer P has a repeat unit wi,qq 8abv 3fsyo fg4m/.th the following structural formula.

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:tdr;a. sq h-e0 il jdvd.lb8u.x7yq8 l with an electronegativity difference of 2.2 and a.iru 7 ed. ljsvq ;h-d.qb8yxd8:l ta0n average electronegativity equal to 1.8?
Refer to Section 17 of the data booklet.

  Which of the following is the correct order for % ionic charactee8zwompu/ 4f65k)djsgd0 yf8 r from highest to lo4ofdu yw6spmd)08 g zke5/fj8west for the following compounds?