NO LINKS Fill it in PLS Zinc + Hydrogen Chloride. Sodium Hydroxide +
Copper Sulfate
Observations Before Interaction
Observations After Interaction.
How was mass conserved?
Proof of a Chemical Reaction

beta decay is the answer

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.

is there any options? maybe im just not seeing them but i need the options to

-love shrooms