Witch of the following is not an example of a chemical change? A. rusting of metal
B. digestion of food
C. burning of firewood
D. evaporation of water

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.

Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.