what do these two changes have in common? a log decomposing in the woods your breath becoming visible on a…

what do these two changes have in common? a log decomposing in the woods your breath becoming visible on a cold day select all that apply. both are only physical changes. both are caused by cooling. both conserve mass. both are changes of state.

what do these two changes have in common? a log decomposing in the woods your breath becoming visible on a cold day select all that apply. both are only physical changes. both are caused by cooling. both conserve mass. both are changes of state.

Answer

Answer:

None of the options are correct.

Explanation:

Step1: Analyze log - decomposition

Log - decomposition is a chemical change. Microorganisms break down the complex organic compounds in the log into simpler substances like carbon dioxide, water, and humus. It is not a physical change or a change of state caused by cooling.

Step2: Analyze visible breath on cold day

Visible breath on a cold day is a physical change. Water vapor in the warm breath cools and condenses into tiny water droplets (a change of state from gas to liquid), but it has nothing to do with the chemical process of log - decomposition. Also, log - decomposition is not caused by cooling in the same sense as breath condensation.

Step3: Analyze mass conservation

Both processes do conserve mass according to the law of conservation of mass. In log - decomposition, the mass of the starting log is equal to the sum of the masses of the products (gases, residues). In breath condensation, the mass of water vapor in the breath equals the mass of the condensed water droplets. However, this is the only correct aspect among the given options, and the other statements about them being only physical changes, being caused by cooling, and both being changes of state are incorrect.