If 2x - 3 = 7, what is the value of x?
x = 5
Name two characteristics of living things
growth, respiration, irritability, movement, nutrition, excretion, reproduction
The movement of particles from an area of higher concentration to an area of lower concentration until evenly distributed is called
Diffusion
What is 0.000508 expressed in standard form?
5.08 x 10 -4
Simplify 17x + 9y -20y - 5x
12x - 11y
The perimeter of a regular hexagon is 8.4 cm. Calculate the length of one side.
1.4 cm
What taxonomy comes after orders?
Families
(Complete the sentence) The constant temperature at which a liquid changes state into a solid is called
the freezing point
Give the name of the physicist who is associated with the famous equation E = mc2
Albert Einstein
Write the number 205 908.17 to three (3) significant figures.
206 000
Express 35 cents to $2.25 as a ratio in its lowest term.
7:45
What phyla does the tree in the picture fall under?
Conifer
The process by which a liquid changes state into a gas at constant temperature is called
boiling
What is the SI unit for frequency?
Spring balance
Which state of matter is easy to compress and contains particles with large amounts of kinetic energy?
Gas
A boy spent 2/5 of his money on sweets and 1/3 on records. What fraction of his money did he spend?
11/15
What phyla does this organism fall under?
Annelids/ segmented worm
Name the substance that forms a white ring when hydrogen chloride gas reacts with ammonia gas
Ammonium chloride
A barometer is used to measure what physical quantity?
Pressure
Name two kingdoms
Prokaryotae, Protoctista, Fungi, Plantae, Animalia
$25, 000 is divided among two consultants in the ratio 2:3. What is the amount of the smaller share?
$10, 000
What are two visible characteristics that can be used to classify organisms?
number of legs, number of body parts, number of wings, presence or absence of antennae
Name the substance that can be used to control garden pests by removing moisture from their bodies by osmosis
Sodium chloride
Explain what is meant by a 'linear scale' in Physics
A linear scale is one in which the markings/divisions or graduations are equally spaced.
When heated, iodine changes from one state of matter to another. What is the name of this process?
Sublimation