The Atom Review

Last updated 11 months ago

4 questions

Carbon an essential element of life is known to have 6 protons, 6 electrons, and 6 neutrons. 

The more accurate name is carbon-_______ , according to its mass number, the sum of the protons and neutrons. 

So it turns out that an atom of carbon can also have 7 neutrons. One more than the usual and its name would be carbon-_______ . 

Both carbon-12 and carbon-13 are called _______ . Specifically the isotopes of carbon.

Word Bank
salt
properties
different 
electrons
same

An isotope is a group of atoms from an element with the_______ # of electrons & protons, but a _______  number of neutrons. 

Isotopes have similar chemical properties because chemical reactions only involve _______  & not neutrons. 

An example of this is chlorine-35 & chlorine-37. Both are isotopes of chlorine. But their mass number is different. They both react similarly with sodium to form sodium chloride, NaCl (table _______ ). 

On the other hand, the physical properties are affected by mass and because isotopes have different masses, there physical _______ are also different. An example of this is hydrogen-2 or deuterium has a slightly higher boiling point & density than hydrogen-1.

Some isotopes are naturally unstable & emit high energy _______ to reach a stable form. They are called radioisotopes.

Even though they are dangerous to us and can penetrate our _______ , they can be beneficial when handled carefully. In some of the applications, the radioisotopes are detected directly, while in others the radioisotopes make the target substances amidst radiation. 

Radioisotopes have many _______  in medicine, defense, archeology, and geology. 

Used to detect tumors __________
Used in the treatment of thyroid disorders __________
Used in smoke detectors __________

Defense:
Used for the detection of explosives__________.

Archeology:
Used to estimate the age of organic compounds __________ also known as carbon-dating.

Geology
Used in estimating the age of rocks __________