Which of these is not characteristic of carbon? a. forms four covalent bonds b. bonds with itself c. forms long chains d. is sometimes ionic?

Any info on neptunes spot? i need it for a project.

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases, its temperature increases the number of intermolecular bonds decreases the space between particles increases the particles move faster

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?