Extra points! Classify each of the following as a physical change or a chemical change.

grinding glass:

rusting of iron:

burning a candle:

sanding wood:

The approximate distance from earth to the moon is 240 thousand miles. the approximate distance from earth to the sun is 93 million miles. in standard notation, the approximate distance from the sun to earth is miles greater than the approximate distance from earth to the moon. in scientific notation, the distance is m × 10n, where m is and n is .