CHE3B

NCEA L3 Chemistry B - Mātai Matū B

Course Description

Teacher in Charge: Mrs S. Withers

The Chemistry Of Organisms, Oceans, Lagoons and Rivers

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 Organisms, Oceans, Rivers and Lakes 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 

The chemistry of Ocean Acidification and its effects on ocean and coastal ecosystems and man.

An Extended Practical Investigation of your choice (for example: monitoring salt content of a water body at high tide or Vitamin C content of a fruit juice as conditions change)

The chemistry of acids, bases, soluble salts, insoluble salts and buffers in water bodies

By the end of the course you will be able to

  • Engage competently in conversations about the cause and effects of Ocean Acidification
  • Analyse a Bjerrum Plot
  • Evaluate the validity of an aqueous chemical experiment 
  • Calculate the pH of a variety of strong and weak acids and bases, buffers and salt solutions in water bodies.
  • Calculate, make use of and show understanding of Ka, Kb, pKa, pKb, Ks values
  •  Draw and make sense of acid - base titration curves
  • Justify your choice of an acid-base indicator
  • Predict the production of precipitates in water bodies using calculations and Le Chatelier's principle

Course Overview

Semester B
Produce a report on the chemistry and effects of Ocean Acidification by processing a range of provided materials.
Develop, execute and evaluate an extended practical investigation on the changing concentration of an aqueous species.
Use your understanding of a variety of strong and weak acids and bases and salt solutions to predict and justify the species present when a substance is dissolved in water.
Calculate the pH of a variety of strong and weak acids and bases, buffers and salt aqueous solutions
Calculate, make use of and show understanding of Ka, Kb, pKa, pKb, Ks values
Draw and make sense of acid - base titration curves
Justify your choice of an acid-base indicator
Predict the production of precipitates in water bodies using calculations and Le Chatelier's principle
If you choose to complete another internal in place of the external you could use the knowledge you built on acids, bases and salts to complete the Acids ,Bases and Salts internal (US6345). These options can be negotiated with your teacher before/during during the course.

Recommended Prior Learning

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

Level 2 Chemistry B - Mātai matū B  - Required

Contributions and Equipment/Stationery

All curriculum costs will be covered by the school.

Assessment Information

This course has three documented assessments - a 3 credit processing information internal on Ocean Acidification, a 4 credit internal which is an Extended Practical Investigation and a 5 credit external on Aqueous solutions.
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) starting from the beginning of the year (taught after school on a Monday from 3:15 to 4:15) and an option to swop the 5 credit external on Aqueous Solutions for an internal 4 credit unit standard on Acids ,Bases and Salts (US6345). These options can be negotiated with your teacher before/during during the course.

Career Pathways

Credit Information

This course is eligible for subject endorsement.

This course is approved for University Entrance.

Total Credits Available: 12 credits.
Externally Assessed Credits: 5 credits.
Internally Assessed Credits: 7 credits.

Assessment
Description
Level
Internal or
External
Credits
L1 Literacy Credits
UE Literacy Credits
Numeracy Credits
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. 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. 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
Credit Summary
Total Credits: 12
Total Level 1 Literacy Credits: 12
Total University Entrance Literacy Credits: 3
Total Numeracy Credits: 9