Question

which of the following best matches the description? burning of fuel to obtain heat. select one: a. proton b. respiration c. kinetic energy d. isotope e. electron f. base g. potential energy h. nucleus i. entropy j. acid k. combustion l. ion m. latent heat n. enzyme o. ph p. neutron q. photosynthesis

Explanation:

Combustion is the process of burning fuel (like wood, coal, or gasoline) in the presence of oxygen, which releases heat energy. Let's analyze the other options:

• Option a (proton) is a subatomic particle, not related to burning fuel.
• Option b (respiration) is a biological process in cells, not the burning of fuel for heat (though it involves energy release, it's different from combustion).
• Option c (kinetic energy) is energy of motion, not related to burning.
• Option d (isotope) is a variant of an element, not related to burning.
• Option e (electron) is a subatomic particle.
• Option f (base) is a chemical substance, not a process of burning.
• Option g (potential energy) is stored energy, not related to burning.
• Option h (nucleus) is part of an atom.
• Option i (entropy) is a measure of disorder, not related to burning fuel for heat.
• Option j (acid) is a chemical substance.
• Option k (combustion) matches the description of burning fuel to obtain heat.
• Option l (ion) is a charged particle.
• Option m (latent heat) is heat related to phase changes, not burning.
• Option n (enzyme) is a biological catalyst.
• Option o (pH) is a measure of acidity/alkalinity.
• Option p (neutron) is a subatomic particle.
• Option q (photosynthesis) is a process in plants to make food, not burning fuel.

Answer:

k. combustion