Year 9 UNIT
FRAMEWORK STATEMENT
ACIDS, BASES AND SALTS
Acid-base chemistry is important in a wide variety of everyday applications, from industrial processes to biological ones, from reactions in the laboratory to those in our environment. Acids and bases are two groups of chemicals that affect you everyday: in our bodies, medicines, household cleaning agents, in the garden, in the car, in fact just about everywhere.
LANGUAGE LIST acid alkali phenolphthalein bromothymol blue sodium hydroxide products formulae
RESOURCES
Textbook References
Core Science 4
Science World 9
Heinemann Outcomes Science 3
Videos
TOPIC OUTCOMES
Prescribed Focus Area
5.2
: A student describes the processes that are applied to test and validate models, theories and laws.
Knowledge
5.7
: A student relates properties of elements, compounds and mixtures to scientific models, theories and laws.
Skills
5.13
: A student identifies a problem and independently produces an appropriate investigation plan.
5.14
: A student undertakes first-hand investigations independently with safety and competence.
5.15
: A student gathers first-hand data accurately.
5.16
: A student accesses information from a wide variety of secondary sources
5.17
: A student explains trends, patterns and relationships in data and/or information from a variety of sources.
5.19
: A student uses critical thinking skills in evaluating information and drawing conclusions.
5.22
: A student plans, implements and evaluates the effectiveness of a variety of tasks independently and as a team member.. base pH methyl blue hydrochloric acid litmus neutralisation salt
T IME: 4Weeks indicator universal indicator methyl orange reactants chemical hydrogen ion
Computer Programs Other Resources
Textbook References:
Longman Science 4
Core Science 4
Science World 9
ASSESSMENT ITEMS
Summative:
Knowledge and understanding m/c task
Outcome 5.7.3 b), c), d), e)iv, f)
Performing first hand investigations – Indicators
Outcome 5.14 a), 5.14 b)
Formative:
5.18 Presenting information -Communication – Procedural
5.18a), 5.18e)
5.20 Problem solving
5.20a), 5.20c)
Science Unit Curriculum K –12 Directorate
NSW Department of Education and Training
Mackellar Girls’ Campus
Year 9 Science Program Acids and Bases page 1 of 2

Syllabus Content Statement.
Students learn about / learn to:
This is the syllabus points (columns 1 & 2)
5.2
the nature and practice of science: c) apply scientific processes to test the validity of ideas and theories e) use examples which show that scientists isolate a set of observations, identify trends and patterns and construct hypotheses or models to explain these
5.7.3 compounds and reactions b) classify compounds into groups based on common chemical characteristics f) describe the role of indicators.
5.7.3
compounds and reactions a) identify that a new compound is formed by rearranging atoms rather than by creating matter c) construct word equations from observations and written descriptions of relevant chemical reactions d) identify a range of common compounds using their common names and chemical formulae. e) qualitatively describe reactants and products in the following chemical reaction:
 neutralisation
Science Unit Curriculum K –12 Directorate
NSW Department of Education and Training
Indicators Suggested Learning Activities
This is what the girls need to achieve to complete the syllabus dot point
Ask the question and describe – What are acids? What are bases? and What are salts? Classify them
Describe the chemistry of acids and bases and how they affect pH
Observe and identify a variety of indicators and the colour changes that occur in various solutions.
Describe the role of indicators
Explain the law of conservation of mass
Describe the relevant chemical reactions and write chemical equations for the reactions eg. HCl and NaOH
Practice a range of chemical formulae and equations to become familiar with chemical formulae.
Describe reactants and products in neutralisation reactions.
These are the teaching activities to achieve the indicators.
Table of common acids and their uses.
Table of common bases and their uses.
Table of common salts and their uses.
References:
Longman Science 4 p 206
Core Science 4 p 46
Science World 9 pp 190, 205.
Experiment: pH tests using a range of indicators with a selection of acids, bases and salts.
Experiment:
Making a natural indicator using red cabbage.
Science world 9 p 193
Experiment:
Antacid & Homework task to follow “ On your own”
Science World 9 p 207
Assessment :
Investigating unknown solutions of acids and bases
Science World 9 p 192
Read pp 34 – 35 CS4 and answer Remember questions
1 – 3
Expt: 2.1 Conserve that Mass p 35 CS4 – do as a demonstration
Activity: Formulae and Word Equations (worksheet in folder)
Prac: Worksheet - Neutralisation.
(Recall what an indicator is – give examples. Explain the need for indicators in neutralisation reactions)
Prac: Titration for colour change
Mackellar Girls’ Campus
Year 9 Science Program Acids and Bases page 2 of 2

Science Unit Curriculum K –12 Directorate
NSW Department of Education and Training
Mackellar Girls’ Campus
Year 9 Science Program Acids and Bases page 3 of 2