CHEM1003-Introduction to Chemistry Questions – Chemistry Assignment Help

Introduction to Chemistry 

Learning Goals
This final assessment is linked to the following unit learning outcomes:

• Use an atomic-scale approach to observe the main types of bonds formed in molecules, the intermolecular forces found between molecules and their resulting physical properties.
• Discern between chemical and physical processes and utilise recognised mathematical and symbolic representations to quantitatively and qualitatively describe a chemical reaction.
• Illustrate the chemistry of carbon by classifying organic compounds on the basis of functional groups.

Answer all questions in the spaces provided. 

Question 1: Any old iron 
Iron is a ferromagnetic metal used for a wide range of industrial purposes, as well as playing an important biological role. Iron compounds can also exhibit a range of colours. For example, iron(II) oxide is black, while iron(III) hydroxide is orange-brown. Iron has an electronegativity of 1.8.

a) Iron(III) fluoride is a compound used in the production of ceramics.
i. Write the chemical formula for iron(III) fluoride. Explain how you determined this formula.
ii. Explain whether iron(III) fluoride is an ionic compound or a molecular compound with reference to the relevant electronegativity values.

b) Iron(III) hydroxide is a compound formed during the first stage of the corrosion of iron. The unbalanced chemical equation for this reaction is provided below: 

Fe + H2O + O2 ? Fe(OH)3

i. Provide a balanced chemical equation for the reaction between iron, water, and oxygen, including all physical states. 
ii. Describe what you would expect to observe in this reaction. Based on the chemical equation above, explain why iron corrosion occurs more quickly in coastal areas.

Question 2: Lewis Boogie 

Draw the Lewis structures of the following compounds:
a) Magnesium fluoride (MgF2)
b) Carbon tetrachloride (CCl4)
c) Explain how you determined the electron configurations for the Lewis structures above.

Question 3: Rocketman 
The reaction of liquid hydrazine (N2H4) with liquid hydrogen peroxide (H2O2) produces nitrogen gas and gaseous water.

a) Write the balanced chemical equation for this reaction (including all physical states).

b) Amateur rocketeer Joe Bang thinks that they could use a mixture of hydrazine and hydrogen peroxide as fuel for their latest home-built rocket. If one of the compounds is present in excess, there is danger of an explosion rather than steady combustion.  Joe has 2000 g of liquid hydrogen peroxide available and concludes from the balanced equation that they need 1000 g hydrazine to have the exact stoichiometric amounts of both reactants and ensure complete combustion occurs. Are they correct? Explain why or why not and determine whether there is a risk of an explosion.

Question 4: From this moment on 
a) Predict the shapes of an ammonia molecule (NH3) and a methane molecule (CH4), explaining your answer with reference to electron domains.

b) Sketch the line structures (with inferred 3-dimensional shape) of NOCl and CO2. Annotate your structures by drawing on the bond dipoles for all the bonds. Predict based on molecular shape and dipole moments which of the two compounds, (NOCl or CO2) will have a higher boiling point. 

Question 5: Name of the game 
a) Hand draw the line structures of the compounds listed below
i. 1-iodo-2,4-dimethylcyclohexane

ii. ethanal

iii. 2-hexene

b) Give the IUPAC names of the compounds represented below:
     
c) The three compounds from Question 5b) are all liquid at room temperature and pressure. Which of these would you expect to be immiscible in heptane? Explain your answer with reference to intermolecular forces.

Question 6: Like a version 
a) Draw the two geometric isomers of 1,2-difluoroethene, labelling each structure with its full correct name.
b) Explain why geometric isomers would not be possible for 1,2-difluoroethane.

This CHEM1003-Chemistry Assignment has been solved by our Chemistry Expert at TV Assignment Help. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics & referencing Style. Be it a used or new solution, the quality of the work submitted by our assignment experts remains unhampered. 

You may continue to expect the same or even better quality with the used and new assignment solution files respectively. There’s one thing to be noticed that you could choose one between the two and acquire an HD either way. You could choose a new assignment solution file to get yourself an exclusive, plagiarism (with free Turn tin file), expert quality assignment or order an old solution file that was considered worthy of the highest distinction.