Physical involves changes that you can observe and describe matters.
Chemical involves the chemical reaction.
Answer:
Answer: 0.66 hours
Explanation:

• Remember 1 second accounts for 1/3600 hours

The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon.
I know its calcium, just not 100% sure why.
Answer:
Júpiter and 60000 the are the awnsers