2. Write word equations for these reactions: (a) Sugar breaks down into carbon and water,
(b) Iron, water, and oxygen produce rust.
(c) Carbonic acid breaks down

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

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