Answer:
The flame test is used to identify certain elements. This is because, when heated, each element will give a special flame color. This color refers to the element itself.
Flame test works best on elements of the first group.
Now, scientific questions means that we are asking for cause and effect.
Examining the given choices, we can identify the scientific questions as follows:
1- What element causes this flame color?
2- Will the flame color change if another element is added?
3- Will changing the temperature affect the flame color?
Explanation:
