WorksheetsN5 Unit 1 and 2 Revision
Total questions: 31
Worksheet time: 16mins
Why does having a smaller particle size increase the rate of a reaction?
Increases the concentration of reactants
Decreases concentration of reactants
Increases temperature
Increases the surface area
An acidic solution contains...
no ions
more hydroxide ions than hydrogen ions
only hydrogen ions
more hydrogen ions than hydroxide ions
10 cm3 of gas is produced in 20 seconds. What is the average rate?
20/10 cm3s-1
10/20 cm3s-1
1/20 cm3s-1
1/10 cm3s-1
Which of the following elements exists as a covalent network?
silicon
oxygen
chlorine
hydrogen
What happens to the rate of a reaction as the concentration is decreased?
increases
decreases
stays the same
Which of the following solutions is not a salt?
Sodium chloride
potassium nitrate
copper sulfate
magnesium hydroxide
What is the gram formula mass of nitrogen?
14
7
21
4
Why do atoms have an overall neutral charge?
same number of protons and neutrons
same number of protons and electrons
same number of electrons and neutrons
atoms have an overall positive charge
What charge does a proton have?
positive
negative
neutral
An atom has 26 protons, 26 electrons and 30 neutrons. This atom has...
atomic number: 56 mass number: 26
atomic number: 26 mass number 26
atomic number: 26 mass number: 56
atomic number: 56 mass number: 52
Mass number is equal to
no. of protons + no of electrons
no, of protons + no. of neutrons
no. of electrons + no. of neutrons
A calcium ion has a charge of
2-
2+
+
-
What is the chemical formula of calcium carbonate
CaCO
CaCO2
CaC
CaCO3
Why do ionic substances conduct electricity when molten and in solution?
they have delocaised electrons
their ions are free to move
their electrons are free to move
they do not conduct
What is a covalent bond?
attraction between positive and negative ions
attraction between positive ions and delocaised electrons
attraction between 2 nuclei and a pair of shared electrons.
What is an ionic bond?
attraction between positive ions and delocalised electrons
attraction between positive and negative ions
attraction between 2 nuclei and a shared pair of electrons
Name the salt produced by the reaction between sodium hydroxide and sulfuric acid.
sodium sulfide
sulfur sodium
sodium sulfate
sodium sulfite
Which reaction is the fastest?
A
B
C
An element contains 19 protons, 19 electrons and 20 neutrons. Which element is it?
Calcium
Magnesium
Potassium
Argon
An alkane has the general formula
CnH2n+2
CnH2n+1
CnH2n
CnH2n-2
An alkene has the general formula
CnH2n+2
CnH2n+1
CnH2n
CnH2n-2
Name this compound
butane
butene
cyclobutane
cyclobutene
Homologous series are
a family of compounds with the same general formula and similar chemical properties
a family of alkanes
hydrocarbons without any other elements
elements with no electrons
What is an isomer?
compounds with the same formula and structure
compounds with the same formula but a different structure
hydrocarbons with similar chemical properties
hydrocarbons that are used as fuels
The products of complete combustion are
oxygen and glucose
carbon dioxide and oxygen
water and carbon dioxide
carbon monoxide and water
What is the functional group of alcohols?
alcohol
hydroxyl
hydroxide
acid
Name this compound
2 methyl pentane
hexane
3 methyl pentane
2,2 dimethyl butane
Name this compound
Butan-2-ol
Butan-1-ol
Butane
But-2-ene
What elements are in a hydrocarbon?
hydrogens, carbons and oxygens
hydrogen and carbons only
hydrogens and carbons and other elements
carbons and heliums
What is the equation for calculating energy in combustion?
E = cm2
E = C x M x change in temperature
E = C / M
E = C x M / change in temperature
What is a fuel?
something that can burn to release energy
oxygen
Something that insulates your home
biodegradable plastics
