Which of these changes do not involve forming or breaking chemical bonds?

A.

burning and melting

B.

rusting and cutting

C.

burning and digesting

D.

boiling and melting

Find the pH, pOH, and [H+] for a solution with a [OH-] of 10^-9 M. Is the solution acidic or basic?

Which of the following elements has the smallest first ionization energy A. K B. Rb C. Li D. Na

When particles of substance condense on cooler surfaces and turn to liquid, is called?

Why do your legs appear shorter when standing in water

Which of the following explains how Albert Einstein tried to influence the use of his discovery of the energy equation? He opposed the use of nuclear fusion during the Manhattan Project.

How many moles of CO will be produced, if 32.5grams of H2O are produced? C6H6S+6O2=>6CO+3H2O+SO3

Identify and briefly describe two ecosystems in your community that are beyond schoolyard

Is N2H2 a ionic compound?

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.