According to the law of conservation of energy, a) an object loses most of its energy as friction. b) the total amount of energy for a system stays the same. c) the potential energy of an object is always greater than its kinetic energy. d) the kinetic energy of an object is always greater than its potential energy.

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent