The metal which burns with a white dazzling flame is: a) silver
b) magnesium
c) gold
d) aluminum

Magnesium burns with a dazzling white flame to form magnesium oxide a powdery mass.

Explanation:

b) Magnesium

Explanation:

According to G double O gle, it doesn't react with cold water but reacts to hot water/steam to form magnesium. Hydroxide and Hydrogen gas is released into the air!

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

6.4 cm (max) - 25 cm (min)