IB myp 4-5 Chemistry – Practice Questions- All Topics
Topic :Bonding-Properties
Topic :Bonding- Weightage : 21 %
All Questions for Topic :structure and bonding,properties,chemical formulas,chemical reactions and the conservation of mass; balancing,equations, the mole concept and chemical calculations;
reaction kinetics [rates, and factors affecting rates/collision theory],equilibria/reversible reactions,energy changes in reactions, endo- and exothermicity; combustion of fuels)
Patterns in nature
With reference to the Nakaya diagram, consider the following questions.
Question:
Identify the conditions necessary for large dendrite plate-shaped crystals to form. You should state both the temperature range and hollow columns.
▶️Answer/Explanation
Ans: For large dendrite plate–shaped crystals to form, a temperature range of –10°C to –22°C; and high humidity are required.
Question:
Identify and state the temperature at which needle-shaped crystals form.
▶️Answer/Explanation
Ans: –3°C to –10°C or 28°F to 13°F
Question:
Which requires more humidity to form: solid plates or hollow columns?
▶️Answer/Explanation
Ans: Hollow columns; requires higher humidity and a lower temperature.