in your own words define the following terms physical change . chemical change , and law of conservation of mass..

Compare and contrast physical changes with chemical changes.

Which of these conditions most likely produces an unstable isotope?

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5