Home / IB MYP Chemistry : Bonding – energy changes in reactions Practice Question

IB MYP Chemistry : Bonding – energy changes in reactions Practice Question

IB myp 4-5 Chemistry – Practice Questions- All Topics

Topic :Bondingenergy changes in reactions

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)

Question:

How might you prevent the formation of carbon monoxide during the combustion of alkanes?

▶️Answer/Explanation

Ans: Ensure that the combustion reaction has a constant supply of oxygen.

Question:

Draw the structural formula for each alcohol in your table.

▶️Answer/Explanation

Ans:

Question:

Analyze the qualitative data collected and then explain with reasons why each reaction is either complete or incomplete combustion.

▶️Answer/Explanation

Ans: Qualitative data collected should reveal differences in the colour of the flame. A yellow flame that gives off dark coloured smoke is evidence of incomplete combustion. A clean blue flame is evidence of complete combustion.

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