D. It has mass, takes up space, and can be seen without a microscope.
Answer: Diamond is covalent crystal. It has the highest melting point because high energy covalent bonds hold the crystal together.
Explanation: Covalent bonds are very strong, so covalent network solids typically have the highest melting points out of all four types of solids.
How high up is a 10kg banana that has 600 joules?
the answer is limestone because it is the weakest