1. How many molecular orbitals can be built from the valence shell orbitals in O2?

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

How can you use chemical equations to predict the products of the reaction you can carry out?

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.