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WorksheetsYear 10 revision
Total questions: 24
Worksheet time: 17mins
What type of indicator turns red, yellow, green and blue
(a)
What color does phenolphthalein changes when it is reacts with acid?
(a)
Which of these range is correct for Phenolphthalein indicator
4-7
11-14
1-4
9-10
Which indicator is changes colour when the pH level between 4~6?
Phenol phthalein
Methyl orange
Methyl violet
Thymol phthalein
What colour does methyl orange turn in alkali?
Orange
Yellow
red
Pink
What would you increase, to increase the kinetic energy of particles involved in a chemical reaction? (one word answer)
(a)
1. Copper(II) oxide catalyses the decomposition of hydrogen peroxide to form oxygen.
In acting as a catalyst the copper(II) oxide?
prevents the decomposition of the oxygen formed
increases the total amount of oxygen formed
increases the rate at which oxygen is formed
causes the decomposition to begin
Crude oil is a mixture of (a)
What fraction of crude oil is used for pavements and roads?
(a)
Group 1 elements are called
(a)
Which alkali metal will react most violently with water?
Lithium
Sodium
Potassium
Rubidium
Select all the reactions that will take place
Chlorine + sodium bromide
Bromine + sodium iodide
Bromine + sodium chlooride
Iodine + sodium bromide
When halogens react to become halide ions they are?
Oxidised
Reduced
Neutralised
displaced
Which is the most reactive halogen?
Fluorine
Bromine
Chlorine
Iodide
What state is bromine at room temperature?
Solid
Liquid
gas
What state is iodine at room temperature
solid
liquid
gas
All common sulfates are soluble except (select all correct answers)
Silver
Lead
Calcium
Barium
Magnesium
Which of the following common salts are all soluble?
Chloride
Nitrate
Ammonium
sodium
Potassium
Which is the equation for finding the heat energy from a reaction
Q=TcΔm
q=mc2
Q=ΔmcT
Q=mcΔT
An straight chain alkane with 5 carbons is called..
(a)
What is the name of this hydrocarbon? CH2=CHCH3
(a)
Which is the most reactive metal
Lithium
Copper
Zinc
Aluminium
Which 3 substances are essential for rusting to take place?
Iron, salt and water
Iron, oxygen, water
Steel, oxygen, acid
Which of these displacement reactions will produce the most energy?
Iron oxide and aluminum
Magnesium and copper oxide
Magnesium and silver nitrate
copper and magnesium oxide
