Questlon 5 of 10 What is the purpose of a unit conversion?
A. To keep track of the units associated with a number throughout an
equation
B. To express a scientific expression in a general form all scientists
can understand
C. To express the amount of something in terms of its number of
smallest units
O D. To change an amount in one unit to its equivalent amount in
another unit
SUBMIT

D. To change an amount in one unit to its equivalent amount in another unit

Explanation:

A unit conversion in science is simply a way or means of changing an amount from one unit to another equivalent unit.

The purpose of a unit conversion is simply to change an amount in one unit to its equivalent amount in another unit.

Kilogram, gram, centimetre, metre, etc are examples of units.

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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.