Bonding Of Atoms Flashcards
(25 cards)
Bonds
something that happens when atoms combine with other atoms the result from interactions between the electrons of the atoms
Electrons
Occupy regions of space called electron shells
I am
atom that has gained or lost an electron
Cat ion
Lost an electron (+)
Anion
Gained electron(-)
Ionic bonds
Electrons transfer
Attraction made by cation and anion that share elsectrons
Covalent bonds
Formed between atoms that share electrons
Structural formulas
Show how atoms bond
Polar molecules
Molecules with a slightly negative end and slightly positive end
The result from unequal sharing of electrons
One example is water
Chemical reactions
When chemical bonds form or break between atoms
Reactions
Starting materials
Products
Substances formed
Synthesis reaction
More complex chemical A+B=>AB
Decomposition reaction
Chemical bonds are broken AB=>A+B
Exchange reactions
Chemical bonds are broken and new bonds are born AB + CD => AD +CB
Reversible Reaction
Products can change back to reactants EQUALIBRIUM AB<=>A+B
Matter
Anything. That takes up space and has mass matter is composed of elements such as solids liquids and gases
Elements
Simplest types of matter with certain chemical properties
Atoms
Smallest particle of an element
Bulk elements
Required by the body in large amounts CHONP
Trace elements
Required by the body in small amounts IRON FE
Ultra trace amounts
Required by the body and very minute amounts (As)
Isotopes
All Adams of a certain element have the same atomic number the isotopes are Adams with the same atomic number but different atomic weights have different numbers of neutrons what same numbers of protons and electrons
Molecule
Formed when two or more chemicals combine
