When a catalyst is added to reactants, the reaction rate may increase or.. A: occur at a lower temperature
B: decrease
C: stay the same

What are the 4 phases of matter in order of increasing engery content?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

The concentration of ionic substances is important for the heart to beat. your heart responds to electrical impulses that travel through heart cells that are made up mostly of water. which properties of ionic compounds are important to support this function? solubility in water conductivity crystalline melting point