Basic chemistry part 1

3 components of an atom

Nuerons,protons(+)electorns(-)

What determines the identiy of an element

Protons

Anion

An atom that has gained or lost electrons

cations

Atoms that lose electrons

Most common type of chemical bonds

Ionic and covalent bonds

Covalent bond

Atoms share electrons (single,double, or triple bonds)

ionic bond

atoms gain or lose electrons, become ions

two or more atoms bonded together

Compound

Multiple atoms held together by covalent bonds form

molecules

making or breaking of chemical bonds

metabolism

reactions that build

Anabolism

reactions that break down

Catabolism

3 types of chemical reactions

-synthesis

-Decomposition

-exchange

building larger compounds from smaller components

synthesis

breaking down a large molecule into smallere components

Decomposition

atoms are just switched around between compounds

Exchange

occurs when the forward and reverse reactions occur at the same rate

Equilibrium

Can occur in covalently bonded molecules

Polarity

electrons are unevenly around molecule. (One is more positive the other one is more negative)

Polar molecule