How do I memorize all the elements on the periodic table?

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

Which substances have the lowest melting points: ionic covalent, or metallic

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space