Ahydrate of cuso4 has a mass of 12.98 g before heating. after heating, the mass of the anhydrous compound is found to be 9.70 g. explain how you would determine the formula of the hydrate and then write out the full name of the hydrate.

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

What forms when chemical reactions combine pollution with sunlight?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.