Which of the following represents a chemical change?

a. bending a wire
b. freezing of water
c. fireworks exploding
d. melting of a wax candle

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.

Of the following elements, which is the least reactive? a. c b. h c. li d. he