What are three examples of a chemical changes?

Temperatures was 10 below zero in the morning and dropped 8 degree during the afternoon what tge temperature late in the afternoon? What kind of volcanoes are found along continental margins? Which body system pulls air into the body? Why are some materials hard to classify as a solid liquid or gas? What are non examples of organ systems? Where does goldenseal grow? What is required for a compound to conduct a charge? What is the area where keratin and other cells mix with air under the nail is called? How do you separate a slurry mixture of salt sand and steel wool? That your training at the polytechnic has adequately prepared prepared you for the position you are applying for? What is a spiky plant called? How fast does Uranus rotate around the sun? What does it means by giraffe necking at catalyst tubes? Is Pluto still famous even though it's not a planet? Is calcium strontium beryllium or magnesium more reactive? What causes high voltage fluctuation in domestic power supply? What happens if there is too much water in the blood? How many ice giants are in the solar system? Is water enters a cell through a cell wall by a process called osmosis true? What effect will an expectant mother's thought and feeling have on the genes inherited by her baby?