Tuesday, 12 June 2018
Wednesday, 23 May 2018
Food Tests
Test
|
Tests for
|
Positive Result
|
Method
|
Iodine
|
Starch
|
Turns Blue-Black
|
Add a drop of iodine to food solution
|
Biuret
(CuSO4 + NaOH)
|
Protein
|
Turns Purple-Lavender
|
Add a few drops of copper sulphate (CuSO4) and sodium hydroxide (NaOH) to food solution
|
Benedict’s Solution
|
Sugar
|
With heat turns Brick-Red precipitate
|
Add a few drops of Benedict’s to food solution and heat gently of a bunsen
|
Ethanol Emulsion
|
Fats
|
White Emulsion
|
Add 2ml of ethanol to food solution and shake/mix, then add 2ml of water to solution and shake/mix
|
DCPIP
|
Vitamin C
|
Turns Colourless
|
Add a few drops of DCPIP to food solution and shake/mix then wait (NB: will turn pinky due to the presence of acid - false positive)
|
Wednesday, 16 May 2018
Term 2 Week 4 2018
Heart
How the Heart Actually Works
Heart 101
What happens during a heart attack?
How blood pressure works
Oxygen’s surprisingly complex journey through your body
What do the lungs do?
How does asthma work?
Tuesday, 15 May 2018
Term 2 Week 3 2018
Human Digestive System
Rat Dissection in Lab A this week
How your digestive system works
What does the liver do?
What does the pancreas do?
How do vitamins work?
How sugar affects the brain
What is fat?
How do carbohydrates impact your health?
Tuesday, 8 May 2018
Monday, 19 March 2018
Term 1 Week 8 2018
Table of Ions
Note:
- Fe2+ is called Iron(II) this will combine with O2- oxide as FeO Iron(II) Oxide (black iron-oxide)
- Fe3+ is called Iron(III) this will combine with O2- oxide as Fe2O3 Iron(III) Oxide (red rust)
- S2- is called the Sulphide Ion and is different to SO42- the Sulphate Iron
Ballon Full of Hydrogen Igniting in Lab A
Hydrogen Balloon
Ionic Bonding Introduction
Ionic Bonding Part 2
Ionic Bonding Part 3
Writing Ionic Formulas: Introduction
What's a polyatomic ion?
Writing Formulas with Polyatomic Ions
Term 1 Week 7 2018
Acid Base Reactions
The strengths and weaknesses of acids and bases
Naming Acids Introduction
Introduction to Balancing Chemical Equations
Balancing Chemical Equations Practice Problems
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