This is a physical change, why? Because in order for it to be a chemical change the liquid would have to boil, pop, catch on fire, corrode, cause heat, or make a new substance. Although be careful about the boiling because when water boils it turns into water vapor, thus making it a physical change. Anyways, another reason it's a physical change is because the actually water didn't change. Think of puting salt in water the water may turn a bit into a white color or taste different, but it is still the same substance(water).
Answer:
<em> </em><em>T</em><em>he </em><em>main </em><em>universal </em><em>indicator</em><em> </em><em>is </em><em>in </em><em>the </em><em>form </em><em>of </em><em>a </em><em>solution</em><em> </em><em>and </em><em>are </em><em>thymol </em><em>blue </em><em>,</em><em> </em><em>methyl </em><em>red </em><em>,</em><em> </em><em>bromothymol </em><em>blue </em><em>and </em><em>phenolphthalein </em><em>this </em><em>mixture </em><em>is </em><em>important </em><em>because</em><em> </em><em>each </em><em>component </em><em>loses </em><em>or </em><em>gains </em><em>protons </em><em>depending</em><em> </em><em>upon </em><em>the </em><em>acidity </em><em>of </em><em>the </em><em>solution</em><em> </em><em>being</em><em> </em><em>tested </em><em>.</em>
<em><u>maybe </u></em><em><u>this </u></em><em><u>m</u></em><em><u>i</u></em><em><u>ghr </u></em><em><u>help</u></em><em><u> </u></em><em><u>u</u></em>
Krafla Volcano in Iceland,
Answer:
The equation that tends to answer this question, (omitting the presence of water) is:
Fe (ClO4) 3 -----------> Fe (+3) + ClO4 (-1)
Explanation:
The numbers that we see in parentheses would be the oxidation numbers of each compound, in the case of iron, iron acts with an oxidation number of +3, and in the case of perchlorate it would be -1.
The stoichiometric name according to IUPAC (most widely used chemical nomenclature) is iron perchlorate.