Isotopes of the same element have different numbers of

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

How many grams of aluminum will there be in 98g of al2o3?

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.