Which statement best describes the properties of an alloy?+ go4 8zq(8se9 cb3;ree roilgxr8jlpb; 3a8w

  Which statements regarding alloys qeifj:9/7ny s 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 monomer5 xd5pmg l6zv/ and polymer in the below polymerization reaction are: zv5l6m d5gp/x

  1.Write balanced chemical equationw3u5::o (mu7vbhrt s gs 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 iy) ,y /hu(q6s3qh:br3qx gwn 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 abunww i(:-3yvlxrdant compounds in Earth’s crust at nearli-rw3 (:xv ywly 9% by 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 th3l7u psqo;mj5 e atoms in the bond has an electronegativity equal to 2.3. What is the electrsp5o;ml7q j3uonegativity of the other atom?

Refer to Section 17 of the data booklet.

  A polymer P has a repeat unit with the fol7dbb cz8w6vz n)i*z p6lowing 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;nr- w4aamhu6 characteristic of a material with an electronegativity difference of 2.2 and an average electronegaw anau4r -hm;6tivity equal to 1.8?
Refer to Section 17 of the data booklet.

  Which of the following is the correct order for % ionic character fro6t )ro,edjtlx .(a0odm highest to lowest for ltex rdod.o t6 ,)a0j(the following compounds?