What effect does an opaque object have on light. Explain

A substance made of both metal and nonmetal atoms?

Why do scientists use stirbars in the laboratory?

a student determined that it requires 106220 j of energy to vaporize 47g of water. is the student is right

What type of elements are generally involved in covalent bonding?

Which one (s) below right about valence electrons? A They are all electrons of an atom B The number of valence electrons in the atoms of an element determines that element's chemical properties C They are at the outermost shell of the atom.

Which of the following is responsible for the cohesive property of water? A. Covalent bonds between the hydrogen atoms of two adjacent water molecules B.

On the ph scale, which value represents a base? 3 7 10

Is it possible for a molecule only made up of hydrogen and carbon to be polar?

Calculate the number of moles of 2 g hydrogen gas

Copper and silver are examples that will form what bond