How does matter affect our daily life?

 Matter is the thing which occupies sapce in the world.

Explanation:  Matter is any substance that has some mass and volume thus occupying space in this world.

Thus everything connected to us is mass like pencil, paper, trees, buses, cars, electronic devices etc.

Thus, it does affect our daily life as it occupies some kind of space in our life. Some susbatnces are very useful for us but some are not.

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.