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47 Cards in this Set

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Atoms

Basic building block of matter

Democritus

First person to use atom as a word

Protons

P+ charge is positive located in the nucleus

Netrons

N charge is neutral located in nucleus

Electron

E- charge is negative located in the electron clous

Nucleus

Center of an atom

Electron Shells

Holds the electrons

Element

Group of similar atoms that are grouped together

Atomic weight

Total number of protons and neutrons

Atomic Number

Number of protons in an arom

Chemical Symbols

The abriviation of an elements name

Isotopes

Atoms with the same number of protons but a different number of neutrons

Molecules

Smallest part of a compound

Compounds

Two or more substances that are chemically combined

Chemical Formulas

The abriviation for a compounds name

Chemical Reactions

Changing one set of chemicals into a different set of chemicals that you start with

Reactants

The substance that you start with

Products

What you end up with

Exothermic

Giving heat off (Break Bonds)

Endothermic

Take in energy (Make Bonds)

Activation Energy

The energy needed to start a reaction

Catalyst

Speed up a chemical reaction

Enzymes

Natural Catalyst- tend to be proteins

Inhibitor

Slow down chemical reactions

Chemical Bonds

Two or more substances chemical combines

Ionic

Gain/ Lose electrons Ex: Na Cl

Covalent

Sharing electrons Ex H2O

Cohesion

Water to water

Adhesion

Water attracted to other things

Solutions

Clear mixtures

Solutes

Gas or Solid Dissolved

Solvents

Liquid Part

Mixtures

Two substances that are physically combined

Homogenous

Same - They tend to be clear

Heterogeneous

Different- They tend to have color

Suspensions

They DO settle



Colloids

Do NOT settle

Organic Chemistry

Studies carbon to a hydrogen bond

Monomers

Single unit of a substance

Polymers

Chain of single units working together

Lipids

Fats, Oils, and Waxes

DNA

Genetic Makeup

RNA

Protein Production

Proteins

Build body tissues/ repairs

SUGARS

Basic building block of carbohydrates

DNA

Basic building block nucleic acids

AMINO Aids

Basic building block of proteins