How is a mixture different from a compound? 1. composition of a mixture may be constant. 2. components of a mixture can be separated by physical means. 3. components of a mixture can only be separated chemically. 4. particles of a mixture are combined chemically?

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

What four properties do all waves have in common