Science Skills
What piece of equipment do you look through to magnify small objects like cells or crystals?
Microscope
Name the three states of matter and order them from most to least closely packed particles
Solid - Liquid - Gas
What separation technique uses a porous barrier (like paper) to separate an insoluble solid from a liquid?
Filtration
What is the largest living structure on Earth, found off the coast of Queensland?
GBR
What sport does Miss Barnett play?
Volleyball
What type of graph is best to use when an exerimpent includes time?
What happens to the particles in ice when it melts into water?
They gain energy, move faster, and start sliding past each other instead of staying in fixed positions.
What property of a mixture's components determines whether you can use a magnet to separate it?
Magnetism — one component must be magnetic, e.g. iron filings, and the other non-magnetic.
What colour and design is on the Australian sports uniform that almost every national team wears?
Green and gold
How old is Miss Barnett?
24
What is the difference between using a measuring cylinder and a beaker when you need an accurate volume of liquid, and why does it matter?
A measuring cylinder gives a precise, accurate volume due to its narrow shape and fine graduations; a beaker only gives an approximate volume.
Why can gases be compressed much more easily than liquids or solids, according to particle theory?
Particles in a gas are far apart with lots of space between them, unlike liquids/solids where particles are closely packed.
What technique would you use to get salt back from salty water?
What biscuit brand makes Tim Tam's?
Arnott's
What is Miss Barnett's new name going to be?
Mrs Balugo
Explain why you should always use a wire gauze mat when heating a beaker over a Bunsen burner flame.
It spreads the heat evenly across the base of the glassware and prevents the glass from cracking due to localised, intense heat.
Why does a gas fill the entire container it's placed in, but a solid keeps its own shape?
Gas particles have weak attraction and move freely in all directions; solid particles are tightly packed and only vibrate in fixed positions.
What does activated charcoal do ?
Activated charcoal has a very large surface area full of tiny pores, which trap (adsorb) dirt, colour particles, and other impurities from the water as it passes through - making th
What was Australia's last world cup score and who are they versing on Saturday?
2-0 and USA
What job did Miss Barnett have before she became a teacher?
A strawberry picker
Name the two parts of a Bunsen burner you adjust to control the air supply and gas flow, and what each one does.
The collar/air hole — adjusts air supply, controlling flame colour/temperature; the gas tap/valve on the gas tap at the base — controls gas flow.
A balloon filled with air shrinks slightly when placed in a freezer, even though no air has leaked out. Using particle theory, explain why this happens.
The cold air particles lose kinetic energy and slow down. They collide with the balloon's walls less frequently and with less force, so the pressure inside drops and the balloon contracts.
Outline Conductivity, Absorbance and pH
pH – Tells you if water is acidic, neutral, or basic (alkaline). Clean drinking water is usually close to neutral (around pH 7).
Absorbance – Tells you how cloudy or coloured the water is, by measuring how much light passes through it. Clean water lets more light through (low absorbance); dirty water blocks more light (high absorbance).
Conductivity – Tells you how many dissolved salts or chemicals are in the water. Clean water has low conductivity; salty or polluted water has high conductivity.
This venomous Australian creature found in waterways and estuaries is one of the only mammals that lays eggs and detects electrical signals from prey.
Platypus
What month is Miss Barnett getting married?
August