SBA 2b - Planning & Design Friday March 19th 2021
Due date:
The Problem:
A student found an unlabelled bottle of transparent, odorless liquid in the kitchen. The
student believes that the liquid is water. Your task is to design an experiment to
determine if this substance is pure water.
Your Planning & Design report must include:
Aim (1 mark)
Hypothesis (2 marks)*
- testable
- clearly stated​

Explanation is in the file

cutt.ly/tz3yDpb

c. 75.7

i think that is the right

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.