State the change in energy that occurs in order to break the bonds in the hydrogen molecules, H2(g) so it can react with O2(g) to form H2O(g).

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space