Which statement best describes the propert r/zzm5qzjpfz yb2m :.). pg7sies of an alloy?

  Which statements regarding alloys are corra+n-uz6bnv,f fxv1a 7+ rz *fject?
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 then q +i9fxcczx)2 bi4i+ below polymerization reaction are: ic ) qfx2i+nc94x+zi b

  1.Write balanced chemical equations for thirs4 ez 3e5f3mxuu689 ooaux )hk64eye 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 is present ini 4i:x9agnje2uu1ts o qh l6 )ug7jq -83oxxv0 $SiO_2$ , 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 com w pu;u vuek,gj 75a+g(buh,3mpounds in Earth’s crust at nearly 9ggu;a7bku m (, u5j he+3wv,pu% 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 the ato q6 -f8obfzt+2 pnruxw5+w(vhms in the bond has an electronegativity equal to 2.3. Whuqft8 + h(+fbnp-ovz25 w6wrx at is 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 jd0/maj(ge 6 iformula.

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 wouldn10 h +p.drhpowytukb4 a5o 48 be characteristic of a material with an electronegativity difference o80yrk 45nowdhpbh 4 ua.+op1tf 2.2 and an average electronegativity equal to 1.8?
Refer to Section 17 of the data booklet.

  Which of the following is the correct order for % ioni6.mn- u m.6 odmrhg0acc character from highest to lohmc- 0mgu m.oa.dr66nwest for the following compounds?