Distilled water will
a. change blue litmus paper to red.
b. change red litmus paper to blue.
c. not change red or blue litmus paper.
d. cannot be tested using litmus paper.

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these