Answer: B. The molecules move faster and become less dense
Explanation:
Liquid is the state of matter in which particles are less tightly bound as compared to solids as they have weak inter molecular forces as compared to solids.
Thus when a solid is heated, the molecules start moving in random motion due to an increase in the kinetic energy. The molecules move apart as the forces will be weak and thus less molecules will be present per unit volume. Thus it will become less dense.
Sr is the most reactive. Correct me if I'm wrong :/
Well there are plenty of benefits and consequences.
But one would be the ability to do certain tasks without actually having to do them. A consequence could be on the environment. For example, the use of a car plays a big part on the environment involving smog.
Hope this helps!
True
Explanation: Covalent bonds occur when electrons are shared between two atoms. A single covalent bond is when only one pair of electrons is shared between atoms.
