Explain how dalton improved upon atomic theory more than 2000 years after democritus’s hypotheses about atoms.

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green

What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water