<span>C. New substances are always produced in chemical changes, which is not the case with physical changes. For example, when you cut wood into smaller pieces you still have wood in the end. But, with a chemical change you change the substance's whole composition. For example when you add two hydrogen's to one oxygen you have water and it can't break down from that. </span><span />
Answer
there is 2 electrons on that atoms
Explanation:
Non-ionizing radiation<span> does not carry enough energy to break molecular bonds and</span>ionize<span> atoms. </span>Ionizing radiation<span> is the type of </span>radiation<span> that carries enough energy to break bonds </span>between<span> molecules and </span>ionize<span> atoms.
Hope this helps!</span>
Explanation:
Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. ... A covalent bond involves a pair of electrons being shared between atoms. Atoms form covalent bonds in order to reach a more stable state.
They react to form salt ZnCl + hydrogen gas
