1.
When a solution of hydrogen chloride is added to solid sodium bicarbonate, the products are carbon
dioxide, water and aqueous sodium chloride.

solution of hydrogen chloride is in other words dilluted HCl so it is acidic and they alwats freact with a bicarbonate to form a salt,warer and carbov(iv)oxide

Explanation:

note

the same product when the acid reacts with a carbonate

for an acid with a base the products are salt and water onl

i think it is d. e because the next one is igneous.

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.