Worksheet: Chemical and Physical Processes

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In this worksheet, we will practice identifying reactions such as neutralizations and oxidations and physical processes such as melting and condensation.

Q1:

Which type of process is represented by the following equation? HO()HO()22sl

  • ACombustion
  • BFreezing
  • CSublimation
  • DMelting
  • EDecomposition

Q2:

Which type of process is represented by the equation shown? HCl()+NaOH()NaCl()+HO()aqaqaql2

  • APrecipitation
  • BAcid–base reaction
  • CCondensation
  • DElimination
  • EHydrolysis

Q3:

Which of the following is an oxidation–reduction reaction?

  • A 3 K O H + H P O K P O + 3 H O 3 4 3 4 2
  • B P O + H S O P O ( O H ) + S O 4 1 0 2 4 4 9 2 3
  • C P H + C H C l C H P H + H C l 3 2 5 2 5 2
  • D K P + 2 O K P O 3 2 3 4
  • E P C l + 3 C H O H ( C H O ) P O H + 2 H C l + C H C l 3 2 5 2 5 2 2 5

Q4:

Which type of chemical reaction is the dissolution of silver in nitric acid an example of?

  • AAcid–base reaction
  • BOxidation–reduction
  • CHydrolysis
  • DHydrogenation
  • EDecomposition

Q5:

Which type of process is represented by the equation shown? CHOH()+6O()4CO()+5HO()49222lggg

  • AOxidation–reduction
  • BAcid–base reaction
  • CElimination
  • DDisplacement
  • EDecomposition

Q6:

Which type of process is represented by the equation shown? Ca(OH)()+2HBr()CaBr()+2HO()222aqaqaql

  • AOxidation–reduction
  • BAddition
  • CIonization
  • DElimination
  • EAcid–base reaction

Q7:

Which type of process is represented by the equation shown? Ca()+Br()CaBr()sls22

  • AAcid–base reaction
  • BCondensation
  • CDissolution
  • DDisplacement
  • EOxidation–reduction

Q8:

Which type of process is represented by the equation shown? NaCl()+AgNO()AgCl()+NaNO()aqaqsaq33

  • APrecipitation
  • BCondensation
  • COxidation–reduction
  • DIonization
  • EDecomposition

Q9:

Which type of process is represented by the equation shown? 2HO()2H()+O()222lgg

  • ADecomposition
  • BDisplacement
  • CHydrolysis
  • DElimination
  • EBoiling

Q10:

Which type of process is represented by the equation shown? 2CH()+7O()4CO()+6HO()26222gggg

  • ACombustion
  • BReduction
  • CCondensation
  • DDisplacement
  • EDecomposition

Q11:

Which of the following is a chemical property rather than a physical property?

  • AMelting point
  • BColor
  • CReactivity
  • DBoiling point
  • EDensity

Q12:

Which of the following is a physical property rather than a chemical property?

  • ACombustion
  • BpH
  • CDensity
  • DReactivity
  • ERedox potential

Q13:

Which of the following is a chemical change rather than a physical change?

  • ABurning of gasoline
  • BMelting of gold
  • CCondensation of steam
  • DMixing chocolate syrup with milk
  • EDissolving of sugar in water

Q14:

Which of the following is a physical change rather than a chemical change?

  • ABurning of gasoline
  • BExplosion of a firecracker
  • CCondensation of steam
  • DSouring of milk
  • EIron rusting

Q15:

Which of the following best describes a physical change?

  • AA change which affects the form or state of a substance, but not its chemical composition
  • BWhen a substance boils
  • CA change which is irreversible
  • DA change which is reversible
  • EA change which affects the chemical composition of a substance

Q16:

Which of the following best describes a chemical change?

  • AA change that affects the form or state of a substance but not its chemical composition
  • BA change that is reversible
  • CA change that is irreversible
  • DWhen a substance burns
  • EA change that affects the chemical composition of a substance

Q17:

Which of the following is a chemical change rather than a physical change?

  • ASugar dissolving in water
  • BWater freezing
  • CMixing sugar and salt
  • DSalt dissolving in water
  • ESmashing a glass

Q18:

Which of these processes is not meant to happen inside a petrol engine?

  • AIgnition
  • BMelting
  • CCombustion
  • DCompression
  • EEvaporation

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