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
