CHE3A

NCEA L3 Chemistry A - Mātai Matū A

Course Description

Teacher in Charge: Mrs S. Withers

The chemistry of vehicles

Chemistry is a fascinating subject because of its history, the beauty of its logic and its multitude of applications. 

At MBC chemistry is a subject for everyone. 

Chemistry is the study of the composition of matter and the changes in composition that this matter undergoes. We do experiments to describe what matter looks like and does and then we learn how to use chemical principles to explain and discuss why matter behaves in this way. 

This Chemistry of Vehicles course is for students keen to extend the development of their thinking skills, ability to engage in logical argument, laboratory skills and their understanding of chemistry and for those who plan to study science or any form of applied science at tertiary level. 

       


This course provides opportunities for students to design their own unique course according to their abilities and aspirations. For example, there are options to take extra practical and theoretical extension units or to follow an unendorsed course where external assessments are replaced by unit standards. 

Topics you will learn about include 

  • Redox processes in batteries 
  • Thermochemistry of fuels 
  • Physical properties of materials
  • Spectroscopy of vehicle emissions  


By the end of the course you will be able to

  • use the principles of Aufbau and lone electron pair repulsion to draw electron configurations of atoms and structures of molecules and predict and justify their physical properties
  • predict and justify whether a reaction is spontaneous and non spontaneous reactions 
  • understand the implications of a material's structure on its chemical and physical properties
  • calculate the enthalpy change of a reaction from book and experimental values
  • use 12C NMR, Infrared and mass spectroscopy to identify unknown organic molecules 
  • predict the chemical reactions that occur in a cell from Redox Potential values.

Course Overview

Semester A
Having set up electrolytic and electrochemical cells you will develop the skills to use Redox Potential values to predict the chemical reactions that occur in these cells. Then, using these skills together with the knowledge you built in the Redox section of the Level 2 course you, you will apply your knowledge to predict, describe and justify the chemical reactions that occur in the Lead Acid Accumulator, the NICAD, Vanadium and the mercury- zinc button batteries.
While learning to read 12C NMR, Infrared and mass spectrographs you will practise identifying and eliminating a variety of unknown organic molecules and then justifying your predictions using concise scientifically worded discussions.
Thereafter, you will build the knowledge to be able to predict the physical properties of atomic, molecular, ionic and metallic substances. Molecular substances are the main focus of this section and, to arrive at a point where you can justify their physical behaviour, you will have opportunities to use the principles of Aufbau and lone electron pair repulsion to draw electron configurations of atoms and structures of molecules. Using these will support you in understanding the implications of atomic and molecular structure on a molecule's polarity and thus a material's boiling point, melting point and solubility.
The last step in completing the course involves carrying out experiments and calculations to classify a selection of chemical and physical reactions as exothermic or endothermic. Using this information you will be able to discover and justify if reaction is spontaneous or not.
If you choose to complete another internal in place of the external you could make soap, mayonnaise, vinaigrette, butter and moisturisers and develop an understanding about how the chemicals involved cause these substances to have their unique properties (US 6347) or /and you can use your Level 2 Redox and Quantitative chemistry knowledge to balance Redox reactions in an alkali environment and carry out a Redox titration and calculate an unknown concentration (US6345) or/and you can use your Level 2 Quantitative chemistry knowledge to carry out an extended practical investigation to find how the concentration of a species changes under different conditions (AS 91387). These options can be negotiated with your teacher before/during the course.


Recommended Prior Learning

Level 2 Chemistry A - Mātai matū A - Required 

Level 2 Chemistry B - Mātai matū B  - Will be an advantage and allow for a wider choice if student is designing a unique personal course  

Contributions and Equipment/Stationery

All curriculum costs will be covered by the school.

Assessment Information

This course has three documented assessments - two 3 credit internals on Batteries and Spectroscopy and one 5 credit external on Particles and Thermochemistry.
This course does however provide opportunities for students to design a personal unique course according to their abilities and aspirations.
For example there is an option to take a year long 5 credit Level 3 Organic Chemistry course (AS 91391) and an option to swop the 5 credit external on Particles and Thermochemistry for an internal 4 credit Redox (US6345) or 2 credit Organic Chemistry Unit Standard (US 6347). A 4 credit extended practical investigation can also be done (AS 91387). These options can be negotiated with your teacher before/during the course.

Pathway

Choose Chemistry if.….
You want to keep your career options open or if you are considering a career in any science or in law, writing , politics, farming or a trade

Chemistry develops habits of thinking logically and clearly that can be applied to almost any sort of work

A knowledge of chemistry is useful, no matter what career you follow
Chemistry is part of all natural sciences and a person cannot go very far in any science without a knowledge of chemistry

Chemistry is an essential prerequisite for many university and technical courses.

Career Pathways

Credit Information

This course is eligible for subject endorsement.

This course is approved for University Entrance.

Total Credits Available: 42 credits.
Externally Assessed Credits: 19 credits.
Internally Assessed Credits: 23 credits.

Assessment
Description
Level
Internal or
External
Credits
L1 Literacy Credits
UE Literacy Credits
Numeracy Credits
U.S. 6345 v7
NZQA Info
Analyse oxidation - reduction reactions

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

Level: 3
Internal or External: Internal
Credits: 4
Level 1 Literacy Credits: 0
University Entrance Literacy Credits: 0
Numeracy Credits: 0
U.S. 6347 v7
NZQA Info
Describe applications of surface chemistry

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

Level: 3
Internal or External: Internal
Credits: 2
Level 1 Literacy Credits: 0
University Entrance Literacy Credits: 0
Numeracy Credits: 0
U.S. 8949 v6
NZQA Info
Characterise the composition of acid and base solutions

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

Level: 3
Internal or External: Internal
Credits: 4
Level 1 Literacy Credits: 0
University Entrance Literacy Credits: 0
Numeracy Credits: 0
A.S. 91165 v2
NZQA Info
Chemistry 2.5 - Demonstrate understanding of the properties of selected organic compounds

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

4
4
4
4
4
Level: 2
Internal or External: External
Credits: 4
Level 1 Literacy Credits: Y
University Entrance Literacy Credits: 0
Numeracy Credits: 0
A.S. 91387 v2
NZQA Info
Chemistry 3.1 - Carry out an investigation in chemistry involving quantitative analysis

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

4
4
4
4
Level: 3
Internal or External: Internal
Credits: 4
Level 1 Literacy Credits: Y
University Entrance Literacy Credits: 0 *
Numeracy Credits: Y
A.S. 91388 v2
NZQA Info
Chemistry 3.2 - Demonstrate understanding of spectroscopic data in chemistry

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

3
3
3
3
Level: 3
Internal or External: Internal
Credits: 3
Level 1 Literacy Credits: 0
University Entrance Literacy Credits: 0 *
Numeracy Credits: 0
A.S. 91389 v2
NZQA Info
Chemistry 3.3 - Demonstrate understanding of chemical processes in the world around us

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

3
3
3
3
Level: 3
Internal or External: Internal
Credits: 3
Level 1 Literacy Credits: Y
University Entrance Literacy Credits: 3r,3w *
Numeracy Credits: 0
A.S. 91390 v2
NZQA Info
Chemistry 3.4 - Demonstrate understanding of thermochemical principles and the properties of particles and substances

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

5
5
5
5
Level: 3
Internal or External: External
Credits: 5
Level 1 Literacy Credits: Y
University Entrance Literacy Credits: 0 *
Numeracy Credits: 0
A.S. 91391 v2
NZQA Info
Chemistry 3.5 - Demonstrate understanding of the properties of organic compounds

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

5
5
5
5
5
Level: 3
Internal or External: External
Credits: 5
Level 1 Literacy Credits: Y
University Entrance Literacy Credits: 0 *
Numeracy Credits: 0
A.S. 91392 v2
NZQA Info
Chemistry 3.6 - Demonstrate understanding of equilibrium principles in aqueous systems

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

5
5
5
5
Level: 3
Internal or External: External
Credits: 5
Level 1 Literacy Credits: Y
University Entrance Literacy Credits: 0 *
Numeracy Credits: Y
A.S. 91393 v2
NZQA Info
Chemistry 3.7 - Demonstrate understanding of oxidation-reduction processes

Further assessment opportunities will not be offered for this standard in line with NZQA guidelines

3
3
3
3
Level: 3
Internal or External: Internal
Credits: 3
Level 1 Literacy Credits: Y
University Entrance Literacy Credits: 0 *
Numeracy Credits: 0
Credit Summary
Total Credits: 42
Total Level 1 Literacy Credits: 29
Total University Entrance Literacy Credits: 3
Total Numeracy Credits: 9

Approved subject for University Entrance

Number of credits that can be used for overall endorsement: 28

Only students engaged in learning and achievement derived from Te Marautanga o Aotearoa are eligible to be awarded these subjects as part of the requirement for 14 credits in each of three subjects.