Identify the acid, Base and salt of following.
b) lime water
d) potassium oxide
coppor sulphate
( vinegar​

Which is true of chemicals? a. things containing chemicals always cost a lot of money. b. chemicals are never dangerous. c. chemicals are in many substances in a home. d. chemicals are rarely found on earth.

What are the percent by mass of copper in penny lab

How do scientists think that gravity affected the formation of our solar system?