Question

a list of chemical and physical processes, a to h, is shown.
a combustion
b diffusion
c melting
d neutralisation
e photosynthesis
f reversible reaction
g roasting
h thermal decomposition
answer the following question about processes a to h.
state which of the processes a to h:
results in particles changing from a fixed position and becoming mobile within a confined space.

e - photosynthesis
d - neutralisation
a - combustion
c - melting
i dont know

Explanation:

Analyze the particle behavior described

The process describes particles changing from a fixed position (solid state) to becoming mobile within a confined space (liquid state).

Identify the corresponding physical process

The transition from a solid (fixed positions) to a liquid (mobile within a confined volume) is melting.

Match with the given options

Melting corresponds to process C.

Answer:

• E - photosynthesis
• D - neutralisation
• A - combustion
• C - melting (Correct answer)