Shapes
Number Bases
Elements, Compounds and Mixtures
Separation of Mixtures
Heart and Lungs
100
What is a regular polygon?
A regular polygon is a shape that has 3 or more equal sides
100
What is the name of the base ten system of numbers?
Denary system
100
What is the element with the chemical symbol Ar?
Argon
100
Some iron filings fell in a tub of rice. Name a method by which the rice can be cleaned.
Magnetism
100
Which chamber of the heart pumps oxygenated blood to the rest of the body?
left ventricle
200
How many lines of symmetry does a rhombus have ?
A rhombus has 2 lines of symmetry
200
What number base system is represented on power buttons?
The binary system on is represented by 1 and 0 is off.
200
An element is a substance which cannot be broken down into simpler substances. Is NaCl an element?
If not, what is it?
No
A compound
200
What is the method of separation that can be used to separate alcohol and water
Fractional Distillation
200
Why is the wall of the alveolus only one cell thick?
To allow rapid diffusion of gases
300
What is the area of a parallelogram ?
Area of a parallelogram is base x height
300
Convert 24 to a binary number
11000
300
There are physical and chemical changes that occur when substances are mixed. What type of change is the melting point of a substance and burning fossil fuels to produce energy
Physical Change
Chemical Change
300
What is the name of the apparatus shown and what type of substances is it used to separate?
Separating Funnel
Two immiscible liquids
300
During vigorous exercise, muscles produce more carbon dioxide. How does the body respond to maintain normal conditions?
Breathing and heart rates increase
400
What shape does this important landmark represent?
The pentagon
400
Calculate the following :
1112 +1012
11002
400
Salt dissolved in water produces what type of mixture?
Which is the solute and which is the solvent?
Homogenous mixture
Solute is salt
Solvent is water
400
Name the apparatus and identify the parts A, B, C, and D
Simple distillation apparatus
Thermometer
Solution
Condenser
Water in
400
A person has a blockage in the coronary artery. Which effect would MOST likely occur first?
Reduced oxygen supply to heart muscles
500
How many lines of symmetry does a scalene triangle have?
A scalene triangle has no lines of symmetry
500
Calculate the following :
312 4 - 2214
314
500
Chemical changes in elements and compounds can be brought about by four methods. What are these?
Heat
Light
Mixing
Electric current
500
A mixture of sand and water can be separated using what method?
What is the liquid part called?
What is the solid part called?
Filtration
Filtrate
Residue
500
A scientist observes that a patient has damaged alveoli caused by long-term smoking. Which conclusion BEST explains how this affects the body?
Less oxygen diffuses into the bloodstream, reducing energy release