What materials is the element, Oxygen used in? (can be point form) Why are these materials important to society, the economy and the environment?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder