NCEA L3 Chemistry B - Mātai Matū B

CHE3B
Course Description

Teacher in Charge: Mrs S. Withers

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


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.

Learning Areas:

NCEA Level 3, Science - Pūtaiao



Career Pathways

Mining Engineer, Acupuncturist, Registered Nurse, Agricultural/Horticultural Scientist, Agricultural/Horticultural Consultant, Paramedic, Anaesthetist, Anaesthetic Technician, Pathologist, Veterinary Nurse, Zoologist, Chemist, Marine Biologist, Medical Physicist, Microbiologist, Chemical Engineer, Biochemist, Biomedical Engineer, Biotechnologist, Metal Worker, Brewer, Mechanical Engineer, Dairy Processing Operator, Clinical Physiologist, Physician, Surgeon, Midwife, Dental Assistant, Chemical Production Operator, Science Technician, Podiatrist, Chiropractor, Civil Engineer, Meteorologist, Medical Laboratory Scientist, Clinical Coder, Dental Technician, Community Karitāne, Pharmacist, Conservator, Crop Farmer/Manager, Oral Health Therapist, Dentist, Medical Imaging Technologist, Diagnostic Radiologist, Dietitian, Forensic Scientist, General Practitioner, Gynaecologist/Obstetrician, Psychiatrist, Electronics Trades Worker, Geologist, Environmental Scientist, Energy/Carbon Auditor, Environmental Engineer, Environmental/Public Health Officer, Plastics Worker, Food Technologist, Forest Manager, Forestry Scientist, Pest Control Technician, Geophysicist, Health and Safety Adviser, Health Promoter, Naturopath, Veterinarian, Ship's Master, Medical Laboratory Technician, Occupational Therapist, Winemaker, Optometrist, Osteopath, Pulp and Paper Mill Operator, Physiotherapist, Plastics Technician, Purchasing/Supply Officer, Production Manager, Radiation Oncologist, Speech-Language Therapist, Water/Wastewater Treatment Operator, Orchard Farmer/Manager, Ophthalmologist, Viticulturist, Epidemiologist

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.
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