Why do my teacher's overload me with work?

Why teachers give lots of work:

They teach you new things you may not have known before

They teach you to think.

They teach you to be curious about things you didn’t know you wanted to know.

They try and teach you the reason you should love learning.

They teach you about different perspectives in our world.

They teach you how mistakes can be learned from.

They teach you how to take turns.

They teach you respect.

They teach you about the world - one that is outside your house, town, state, continent, and most of your mind.

They show you books you would never pick up on your own.

They teach you the how, who, what, why, where, and when.

They teach you the importance of communication.

They teach you how to get along with others - even those you don’t like.

They teach you to share.

They teach you patience.

They teach you compassion.

These are only a few things a good teacher will teach you. Some you will learn in a year and other things take several years and several teachers.

he would use the colour black

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.