Chemistry, 06.05.2021 01:00, loveeegabbie7071
3. A log was burned in a fireplace. Light, heat, and sound were given off as the log burned (1 point)
and crackled. After the fire went out, the log had been broken down into coals and ashes.
What type of change occurred and what evidence supports this type of change?
O A chemical change occurred because the atoms were rearranged into new compounds.
O A physical change occurred because the burning of the substance produced sound waves.
O A chemical change occurred because only the shapes and sizes of the particles were changed.
O A physical change occurred because the new substances can be changed back into the original substances.
Answers: 2
Chemistry, 22.06.2019 00:00, rileyallen4186pd5tgy
Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.
Answers: 1
Chemistry, 22.06.2019 09:50, Amandachavez94
Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange
Answers: 1
3. A log was burned in a fireplace. Light, heat, and sound were given off as the log burned (1 point...
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