The surface of the sun is at a temperature of about 5800 K. Suppose that the sun was the same size, but it had a temperature of 7000 K instead of 5800 K. Use the graph of Planck's law to predict the ways that the sun's light would be different.

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

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