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This is designed to be used by teachers to help students develop skills in answering multiple choice questions. Douglas Racey, Waid Academy, Anstruther, Fife, Scotland. Higher Chemistry Prelim Quiz. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21.

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This is designed to be used by teachers to help students develop skills in answering multiple choice questions.Douglas Racey, Waid Academy, Anstruther, Fife, Scotland

Higher Chemistry

Prelim Quiz

1

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answer develop skills in answering multiple choice questions.

  • How can the progress of a chemical reaction be followed?

Changes in concentration, mass, volume, colour


What factors can affect the rate of a chemical reaction

answer develop skills in answering multiple choice questions.

What factors can affect the rate of a chemical reaction?

Concentration

Particle size

Temperature

Use of a catalyst


3 what is activation energy

answer develop skills in answering multiple choice questions.

3. What is activation energy?

The minimum kinetic energy required by colliding particles before a reaction will occur


answer develop skills in answering multiple choice questions.

Which pollutant, produced during internal combustion in a car engine, is not the result of incomplete combustion?

Nitrogen dioxide


In a winter blend the petrol has more

answer develop skills in answering multiple choice questions.

In a winter blend, the petrol has more

Small molecules

which are more volatile


How many other unsaturated isomers are there of pent 1 ene

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How many other unsaturated isomers are there of pent-1-ene?

4


What type of reaction takes place when propene is formed from propanol

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What type of reaction takes place when propene is formed from propanol?

dehydration


When propanal is heated with benedict s solution what colour change takes place

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When propanal is heated with Benedict’s solution what colour change takes place

Blue to brick red


What is a feedstock

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What is a feedstock?

A chemical from which other chemicals can be extracted or synthesised.


What is meant by enthalpy of combustion

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What is meant by enthalpy of combustion?

The energy produced when one mole of a substance is burned.


What is meant by enthalpy of solution

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What is meant by enthalpy of solution?

The energy given out OR taken in when one mole of a substance is dissolved in water.


What functional groups are present in aspirin

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What functional groups are present in aspirin?

Aromatic

Ester

Carboxylic acid


What relationship is used to calculate enthalpy changes

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What relationship is used to calculate enthalpy changes?

DH = cmDT


Why does covalent radius decrease across a period

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Why does covalent radius decrease across a period?

As you go across a period, more protons are added and they pull the electrons closer to the nucleus


Why does 1 st ionisation energy decrease going down a group

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Why does 1st ionisation energy decrease going down a group?

The covalent radius increases and the electron being removed is further from the nucleus and is screened from the pull of the nucleus by extra electron energy levels


What type of chemicals are manufactured by a batch process

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What type of chemicals are manufactured by a batch process.

Chemicals which require a high degree of purity e.g pharmaceuticals


What is meant by saying that a reaction has reached equilibrium

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What is meant by saying that a reaction has reached equilibrium?

At equilibrium the rates of the forward and reverse reactions

are equal.

The concentrations of the reactants and products remain constant.


What happens to the strength of van der waals forces going down the group of halogens

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What happens to the strength of Van der Waals’ forces going down the group of halogens?

INCREASES

because the size and mass of the molecule increases


19 name this molecule

1, 2 - dibromobutane develop skills in answering multiple choice questions.

answer

19. Name this molecule


Which have stronger van der waals polar or non polar molecules

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Which have stronger van der Waals’ – polar or non-polar molecules?

Polar molecules


What effect does increasing the concentration of a reactant have on the position of equilibrium

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What effect does increasing the concentration of a reactant have on the position of equilibrium?

Shifts equilibrium to the right


What is the bonding and structure found in diamond

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What is the bonding and structure found in diamond?

Covalent network structure


Some recently developed polymers have unusual properties which polymer is soluble in water

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Some recently developed polymers have unusual properties. Which polymer is soluble in water?

Poly(ethenol)


Proteins can be denatured under acid conditions during this denaturing the protein molecule

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Proteins can be denatured under acid conditions. During this denaturing, the protein molecule

Changes shape


What is the number of atoms in 2 moles of carbon dioxide

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What is the number of atoms in 2 moles of carbon dioxide

3.612 x 1024

(6.02 x 1023 x 2 x 3)


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