CHEMICAL COMPOSITION OF THE BODY Flashcards
1
Q
What are the trace elements of the body?
A
Na Se P Mg Mn K Ca Fe
2
Q
Isotope
A
Atoms of an element that have different numbers of neutrons.
3
Q
Atomic mass
A
p=#e
4
Q
Atomic number
A
p
5
Q
What is alpha radiation?
A
- weakest radiation
- made up of 2 protons & neutrons bond together
- Doesn’t travel far
- Can cause mutations or cancer if ingested a lot, or inhaled a lot.
- Not common in hospitals
6
Q
Beta raiation
A
- used in hospitals
- A lot in nature
- Doesn’t do a lot of damage unless you have repeated exposure
- It can mutate the DNA of the cell
- Is used to kill cancer cells
- Can penetrate through wood, can’t penetrate through thick glass
7
Q
Gamma radiation
A
- BIG BOI RADIATION
- Is used in hospitals
- Atoms are exploding & emitting massively high energy waves.
- Can’t go through a thick piece of lead
8
Q
Will stable atoms bond to anything else?
A
No
9
Q
How many electrons are in shell 1 of atoms?
A
2
10
Q
How many electrons are in shell 2 `
A
4
11
Q
How many electron are in shell 3
A
8
12
Q
What is the OCTANE RULE?
A
There must be 8 electrons in the outer shell.
13
Q
What happens when a shell contains at least one unpaired electron?
A
It’s unstable
14
Q
What are the important cations in Physiology?
A
Na+/ Sodium
K+/ Potassium
Ca2+/ Calcium
H+/Hydrogen
15
Q
What is a cation?
A
a positively charged ion
