Answer:
Chemical indicator, any substance that gives a visible sign, usually by a color change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow color to an alkaline solution.
Answer:
CaSO4 2H20
Explanation:
if you look it up you would see the same answer on a website
Answer:
me too? HAHAHHAHAHAHAHAHAHAHAHHA
Light/thermal. Charges move back and forth which move at the speed of light
Answer:
Explanation: Traits are characteristics, such as its size or height and that comes from parents or other relatives.
