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WorksheetsYear 11 Paper 1 - Chemistry
Total questions: 92
Worksheet time: 57mins
In which state can diffusion NOT happen?
Solid
Liquid
Gas
Which state is the most dense?
Solid
Liquid
Gas
What is the name for the change of state when a liquid changes to a gas?
Melted
Evaporation
Condensation
Freezing/Solidifying
What is the name for the change of state when a solid changes to a liquid?
Melted
Evaporation
Condensation
Freezing/Solidifying
What is the name for the change of state when a gas changes to a liquid?
Melted
Evaporation
Condensation
Freezing/Solidifying
What is the name for the temperature where a solid turns into a liquid?
Boiling point
Melting point
What is the name for substances made of two or more types of atoms NOT chemically bonded together?
Elements
Compound
Mixtures
What is
the formula for Methane?
H2O
CO2
Define "alloy"
(a)
What is the word for an element that always exists as two atoms bonded together?
Triatomic
Atomic
Diatomic
What is the different between Ar (relative atomic mass) and Mr (relative molecular mass)
(a)
Define "pure" substance
A mixture designed as a useful product
A single element or compound
Cannot dissolve
Define "formulation"
A mixture designed as a useful product
A single element or compound
Cannot dissolve
Define "solvent"
Cannot dissolve
Can dissolve
A liquid in which a solid will dissolve
What is crystallisation used to separate
Liquids with different boiling points
An insoluble solid and a liquid
A soluble solid and a solvent (collect solid)
What are the two "phases" in chromatography?
(a)
How is the Rf value calculated?
Rf = distance by solvent / distance by dye
Rf = distance by dye / distance by solvent
What is the "stationary phase" in chromatography
The ink
The paper
The solvent
What is chromatography used for?
(a)
Define "atomic number"
Atoms of the same element that have the same number of protons but different numbers of neutrons
Sum of protons and neutrons in an atom
No. of protons in an atom
Define isotope?
Atoms of the same element that have the same number of protons but different numbers of neutrons
Sum of protons and neutrons in an atom
No. of protons in an atom
What was the Dalton model of the atom?
Neutrons & protons in a +ve nucleus, -ve electrons in shells
Positive nucleus orbited by negative electrons at specific distances from nucleus
Atoms = tiny spheres
1) Mostly empty space 2) Dense, positive mass in the centre (the nucleus)
Describe the Neil's Bohr model of the atom
Neutrons & protons in a +ve nucleus, -ve electrons in shells
Positive nucleus orbited by negative electrons at specific distances from nucleus
Atoms = tiny spheres
1) Mostly empty space 2) Dense, positive mass in the centre (the nucleus)
Describe Rutherford's model of the atom
Neutrons & protons in a +ve nucleus, -ve electrons in shells
Positive nucleus orbited by negative electrons at specific distances from nucleus
Atoms = tiny spheres
1) Mostly empty space 2) Dense, positive mass in the centre (the nucleus)
What are the rows of the periodic table called?
Groups
Periods
What did Mendeleev do when creating the modern periodic table?
(a)
Where are non-metals found in the periodic table?
Right
Group 1
Middle
Name the groups in the periodic table (1, 7, 0)
(a)
State 3 properties of group 7
Low melting point
Non-metals
Less reactive
Diatomic
Strong
Give 4 properties of metals
High melting point
Malleable
Good thermal and electrical conductors
Brittle
Ductile
Give 3 properties of non-metals
Low melting point
Malleable
Poor thermal and electrical conductors
Brittle
Ductile
What happens to reactivity as you move down group 1?
They become less reactive - it is easier to gain their outer electron.
They become more reactive - it is easier to lose their outer electron.
They become less reactive - it is easier to gain their outer electron.
Which type of bonding occurs between non-metals?
Metallic
Ionic
Covalent
Which type of bonding occurs between metals?
Metallic
Ionic
Covalent
Which type of ions are formed by non-metals?
Negative ions
Positive ions
What is a fullerene?
Hollow carbon structures
A single layer of graphite
Two or more different physical arrangements of the same atom e.g. diamond, graphite, graphene
What is an allotrope?
Hollow carbon structures
A single layer of graphite
Two or more different physical arrangements of the same atom e.g. diamond, graphite, graphene
Describe what happens in ionic bonding
Electrons are shared between atoms = strong electrostatic attraction between electrons and nucleus
Electrons become delocalised creating a sea of negative charge = strong electrostatic attraction with positive metal ions
& sea of delocalised electrons
Electrons are transferred from a metal atom to a non-metal atom = strong electrostatic attraction between oppositely charged ions
Describe what happens in metallic bonding
Electrons are shared between atoms = strong electrostatic attraction between electrons and nucleus
Electrons become delocalised creating a sea of negative charge = strong electrostatic attraction with positive metal ions
& sea of delocalised electrons
Electrons are transferred from a metal atom to a non-metal atom = strong electrostatic attraction between oppositely charged ions
State three properties of diamond
Hard
Poor electrical conductor
Soft & slippery
Good thermal conductor
Conducts electricity
State two properties of graphite
Hard
Poor electrical conductor
Soft & slippery
Good thermal conductor
Conducts electricity
State two properties of silicon dioxide
Hard
Poor electrical conductor
Soft & slippery
Good thermal conductor
Conducts electricity
Why do simple compounds have low melting and boiling points?
(a)
Name the structure that ionic bonding forms
(a)
What is Oxidation
Gain of electrons
Loss of electrons
metal + oxygen -->
metal hydroxide + hydrogen
metal oxide
metal salt + hydrogen
metal + acid -- >
metal hydroxide + hydrogen
metal oxide
metal salt + hydrogen
Define Reduction (in terms of oxygen)
Removal of oxygen from a compound
Addition of oxygen to an element
acid + alkali (or base) -->
(a)
If nitric acid reacts with a metal, what will the salt end in?
metal sulphate
metal chloride
metal nitrate
metal carbonate + acid -->
metal hydroxide + hydrogen
metal oxide
metal salt + hydrogen
metal salt + water + carbon dioxide
What is the test for carbon dioxide gas?
A burning splint will make a squeaky pop
A glowing splint will relight
Limewater will turn cloudy
Damp litmus paper will be bleached and turned white
What is the test for chlorine gas?
A burning splint will make a squeaky pop
A glowing splint will relight
Limewater will turn cloudy
Damp litmus paper will be bleached and turned white
Which ions make a solution acidic?
H+
OH- (hydroxide)
Give 3 ways to measure the pH of a substance
(a)
What pH and colour is universal indicator in an strongly ALKALINE solution?
pH10-14 (purple)
pH8-9 (blue)
pH 1 - 3 (red)
What pH and colour is universal indicator in an strongly ACIDIC solution?
pH10-14 (purple)
pH8-9 (blue)
pH 1 - 3 (red)
What colour is methyl orange in acid and alkali?
Colourless (acid), pink (alkali)
Red (acid), orange (alkali)
What colour is the flame test result for lithium, sodium, potassium, calcium & copper?
Li = Purple, Na = Yellow, K = Lilac, Ca = orange-red, Copper = green
Li = crimson, Na = Yellow, K = Lilac, Ca = orange-red, Copper = green
Li = crimson, Na = Brown, K = Lilac, Ca = orange-red, Copper = green
What is Avogadro's constant?
(a)
What is the equation for calculating moles from mass and Mr?
Moles = Mr/mass
Moles = mass/Mr
Moles = Mr/Mr
What is the equation for calculating atom economy?
(mass of product made/maximum theoretical mass of products) x 100
(Mr of desired product/sum of Mr of all reactants) x 100
State 3 reasons why actual yield of a reaction might be lower than theoretical yield?
Reversible reaction
Lost product
Lost reactant
Other products created
Define 'electrolysis'
A substance is decomposed (broken down) using electricity
Ions in a solution that are free to move and can conduct electricity
What is the name of the negative electrode?
Anode
Cathode
What happens at the anode?
Electrons transferred from the cathode to the ion and a metal is formed
Electrons transferred from the ion to the anode and the non-metal forms
What would be formed at the cathode in electrolysis of dilute sodium chloride solution?
Hydrogen
Chloride gas
What is the experiment called that allows you to find the concentration of an unknown substance?
(a)
What is the ionic equation for a neutralisation reaction?
(a)
What are the 4 state symbols?
s
l
w
g
aq
Which type of reaction releases energy into the surroundings?
Endothermic
Exothermic
Is energy absorbed when bonds are broken or bonds are made?
Broken
Made
What would happen to the temperature of the surroundings in an exothermic reaction?
Decrease
Increase
Give three examples of endothermic reactions
Thermal decomposition reactions
Self-heating cans
Citric acid + sodium hydrogen carbonate
Sports injury packs
Hand warmers
Give two examples of exothermic reactions
Thermal decomposition reactions
Self-heating cans
Citric acid + sodium hydrogen carbonate
Sports injury packs
Hand warmers
What is the substance called that reduces the activation energy required by a reaction?
(a)
What is the name of the fuel cell in which hydrogen is oxidised to produce water and energy?
Hydrogen fuel cell
Oxygen fuel cell
Nitrogen fuel cell
Which ion does oxygen form?
O2−
O2+
O−
If the volume of the product or reactant is given in cm3, which unit should you use for the rate?
mol/s
g/s
cm3/s
How does increasing temperature increase rate of reaction?
More particles -> more frequent successful collisions
Particles closer together -> more frequent successful collisions
Particles have more kinetic energy -> more collisions with activation energy
Provides an alternative pathway for the reaction with a lower activation energy
How does increasing pressure increase rate of reaction?
More particles -> more frequent successful collisions
Particles closer together -> more frequent successful collisions
Particles have more kinetic energy -> more collisions with activation energy
Provides an alternative pathway for the reaction with a lower activation energy
State 4 factors that affect rate of reaction
(a)
State how to calculate concentration
concentration (mol/dm3) = volume (dm3) / moles (mol)
concentration (mol/dm3) = moles (mol) / volume (dm3)
What is the volume of 1 mole of any gas at room temperature and pressure?
34dm3
24dm3
14dm3
What is Corrosion?
Creation of materials by chemical reactions with substances in the environment
Destruction of materials by chemical reactions with substances in the environment
Which metals are contained within Bronze?
Copper and Tin
Copper and zinc
Silver, copper, zinc
Which metals are contained within Brass? (separate only)
Copper and Tin
Copper and zinc
Silver, copper, zinc
State two properties of low carbon steel
Soft
Strong
easy to shape
Brittle
How do metals form ions?
Atoms become ions by gaining or losing electrons.
Metals lose electrons to form positive ions (cations).
Non-metals typically gain electrons to form negative ions (anions).
How do atoms become ions?
Atoms become ions by gaining or losing electrons.
Metals lose electrons to form positive ions (cations).
Non-metals typically gain electrons to form negative ions (anions).
What is a chemical property?
How a substance behaves physically e.g. boiling point, melting point, conductivity, density, state of matter.
How a substance reacts with something.
State the definition of an alloy.
(a)
