Answer:
Universal indicator can show us how strongly acidic or alkaline a solution is, not just that the solution is acidic or alkaline. This is measured using the pH scale , which runs from pH 0 to pH 14.
Explanation:
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C. The mass number is the amount of Protons and electrons there are combined, so 200 - 80 is 120.
Answer:
The best mean is heating the solution
Answer:
Adding or removing energy from matter causes a physical change as matter moves from one state to another. For example, adding thermal energy (heat) to liquid water causes it to become steam or vapor (a gas). And removing energy from liquid water causes it to become ice (a solid).
Explanation:
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I think there is 4 electrons in the outer shell of 14 atomic number. If I'm wrong, know that I'm not very good.
