Please enable JavaScript.
Coggle requires JavaScript to display documents.
chemical context of life - Coggle Diagram
chemical context of life
compound
made of two or different atoms joined by bonding
NaCl, H2O
properties depend on its atom and how they are bonded
matter
anything that takes space and has mass
Element
substance that cannot be broken down by chemical reactions
essential elements
Oxygen,Carbon,hyogen,nitrogen
make up 96% of living matter
Ca,P,K,S
accounts for 4%
trace elements
required in minute quantities
atom
small unit of matter that retains the property of element
neutrons
found in nucleus
neutral charge
electrons
negative charge
vary in the amuont of energy they possess
Energy
capacity to cause change
potential energy
energy that matters possess due to its location
located in orbital around nucleus
protons
found in nuleus
positive charge
atomic number
number of protons and electrons
written in the left of element
mass number
number of protons and neutrons
isotopes
same number of protons but some atoms have more neutrons than atoms of the same element
radioactive isotopes
nucleus decay spontaneously
half-life
the time it takes for 50% of parent isotope to decay
chemical bonds
covalent bonds
strongest
sharing pair of valence electrons by two atoms
electronegativity
ability of an atom to attract electrons towards it in chemical bond
nonpolar covalent bond
polar
oppositely charged
non polar
equally charged
ionic bonds
ions
oppositely charged atoms
cation
positively charged ion
anion
negatively charged ions
ionic compuonds
compounds formed by ionic bonds or salts
hydrogen bond
btn hydrogen and an electronegative tom
chemical reactions
breaking or making chemical bonds leading to changes in composition
chemical equilibrium
reactions offset one another