Which of the following shows a chemical change occurring? (2 points) a ice hammer breaking ice © FatCamera / iStock 2018 b making noodles © Public Domain c boiling water © RyersonClark / iStock 2018 d baking bread © Claudiad / iStock 2018

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn