Worksheet: Chemical and Physical Processes

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

Q1:

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

  • ACombustion
  • BpH
  • CDensity
  • DReactivity
  • ERedox potential

Q2:

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

Q3:

Which of the following best describes a chemical change?

  • AA change that affects the chemical composition of a substance
  • BA change that occurs when a substance boils
  • CA change that is irreversible
  • DA change that is reversible
  • EA change that affects the form or state of a substance but not its chemical composition

Q4:

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

Q5:

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

  • AIgnition
  • BMelting
  • CCombustion
  • DCompression
  • EEvaporation

Q6:

When ice melts, changes in the interactions between atoms result in a transfer of heat.

Explain why this process is a physical process and not a chemical reaction.

  • ABonds within molecules stay the same.
  • BBonds between molecules stay the same.
  • CThe process is reversible.
  • DThe process involves only small changes in energy.
  • EThe process is endothermic.

The following diagrams illustrate the covalent bonds (solid lines) and intermolecular forces (dashed lines) of water molecules. Which diagram best illustrates the melting of ice?

  • A
  • B
  • C
  • D
  • E

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.