Mixture. Mixtures can be separated into their component parts, while substances are chemically bonded atoms that can't be separated by physical means.
Answer:
yes water boils at 100 degree Celsius but the boiling point water is different at different place because of the altitude of that place. For example boiling point of water is 96 decree Celsius.
No the 2 solutions don't boils at same time. it's because of their volume.
if the volume is more then it takes more time to boli. and vice versa
