Answer:
Increasing
Explanation:
c. Sodium
b. Chromium
d. Iron
Explanation:
A solution with pH less than 7 will be acidic in nature and it will change color of blue litmus into red.
For example, HCl is a strong acid as it dissociates to give hydrogen ions and chlorine ions.
A solution with pH more than 7 will be basic in nature and it will change color of red litmus into blue.
A solution with pH equal to 7 will be neutral in nature and it will not change the color any litmus paper.
Thus, we can conclude that in a 0.01 M solution of HCl, litmus will be red.
The flames being emitted by the ions are as a result of ions 3. emitting energy as they return to lower energy levels.
When ions are heated:
As they move around, they expend some of that energy and lose it as a result thereby returning to lower energy levels. As that energy is lost, it comes across as light being emitted by the ions.
In conclusion, ions in the flame test emit light as they lose energy and return to a lower energy level.
Find out more at brainly.com/question/6357832.
Answer;
-Emit energy as they return to lower energy levels.
Explanation;
-A characteristic color of light is emitted by these ions in the flame when the electrons emit energy as they return to lower energy levels.
-The metal ions do absorb energy, and the electrons are boosted to higher energy levels, but they emit that energy as they fall to lower levels, and it is the photons of light they are emitting that can be seen.