The atoms of Element A(blue) and B (orange)form to compound shown here. Do these compounds obey the law of multiple proportions and why?

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Which description best characterizes the motion of particles in a solid?

State one important difference between a physical change and a chemical change?