What are characteristics of a chemical equation? a. Equation must contain correct formulas for reactants and products.
b. Equation must represent known facts .
c. Equation must satisfy Law of Conservation of Mass.
d. All of the above.
e. Number 1 and 3 only.

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset

Based on its chemical properties, identify the position of each chemical family on the periodic table.