How is a chemical change different from a physical change?

Suppose a log's mass is 5 kg. After burning, the mass of the ash is 1 kg. Explain what may have happened to the other 4 kg.

How is a chemical change different from a physical change?

Distinguish between a physical change and a chemical change.

How are physical changes different from chemical changes?

How do chemical changes differ from physical changes?

Give an example of physical change and an example of a chemical change.

List SI units of measurement for length, mass, time, and temperature.

During respiration, most ATP is formed as a direct result of the net movement of?

(a) hydrogen ions against a concentration gradient
(b) electrons through a channel protein
(c) electrons against a concentration gradient
(d) hydrogen ions down a concentration gradient

Explain the difference between a chemical change and a physical change. Is the combustion of gasoline a chemical change or a physical change? Explain your answer.

How does a physical change differ from a chemical change?

Balance the above reaction by writing in the correct coefficient(s). How does a balances equation demonstrate the law of conservation of mass ? What molecule in the above equation is a hydrocarbon ? Draw a full structural formula for the hydrocarbon that you listed above .

What are the functions of the subcutaneous layer?

Name and describe the physical and compositional layers into which scientists divide the Earth.