Which is a balanced chemical equation? a. c7h16 + 5o2 6co2 + 4h2o b. c7h16 + 11o2 7co2 + 8h2o c. c7h16 + 14o2 7co2 +5h2o d. c7h16 + 22o2 14co2 + 16h2o

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

This statement about matter and its behavior is best classified as a