After some wood has completely burned in a fire, some of the matter that made up the wood has been destroyed.

Is the statement correct or incorrect? Explain.

A) It is correct. The ashes weigh less than the original wood and this proves that some of the mass was destroyed.

Eliminate

B) It is incorrect. Ashes look different than wood but the mass of the ashes is the same as the mass of the original wood.

C) It is incorrect. Look at the ashes under the microscope. These particles will look exactly like the particles in the wood.

D) It is incorrect. Capture and collect all of the gases given off by the fire and combine these masses with the mass of the left over ashes. This should equal the mass of the original wood.

Question

Chemistry

Ahmad Abbott

12 July, 08:44

After some wood has completely burned in a fire, some of the matter that made up the wood has been destroyed.

Is the statement correct or incorrect? Explain.

A) It is correct. The ashes weigh less than the original wood and this proves that some of the mass was destroyed.

Eliminate

B) It is incorrect. Ashes look different than wood but the mass of the ashes is the same as the mass of the original wood.

C) It is incorrect. Look at the ashes under the microscope. These particles will look exactly like the particles in the wood.

D) It is incorrect. Capture and collect all of the gases given off by the fire and combine these masses with the mass of the left over ashes. This should equal the mass of the original wood.

+4

Answers (2)

Know the Answer?

Hubbard · Answer 1

Answer is B. The law of conservation of mass states that matter is not destroyed in a chemical reaction, but rearranged. So this ash is the same mass as the original wood

Joselyn Schmitt · Answer 2

The correct answer is D - When burning a log, the wood combined its components with oxygen. if you could capture the products (CO2, H2O, C, CO, etc), you would have a greater mass than what you started with, burning the log combined the log's components with oxygen in order to burn it.