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47 Cards in this Set
- Front
- Back
Atoms |
Basic building block of matter |
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Democritus |
First person to use atom as a word |
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Protons |
P+ charge is positive located in the nucleus |
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Netrons |
N charge is neutral located in nucleus |
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Electron |
E- charge is negative located in the electron clous |
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Nucleus |
Center of an atom |
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Electron Shells |
Holds the electrons |
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Element |
Group of similar atoms that are grouped together |
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Atomic weight |
Total number of protons and neutrons |
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Atomic Number |
Number of protons in an arom |
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Chemical Symbols |
The abriviation of an elements name |
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Isotopes |
Atoms with the same number of protons but a different number of neutrons |
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Molecules |
Smallest part of a compound |
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Compounds |
Two or more substances that are chemically combined |
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Chemical Formulas |
The abriviation for a compounds name |
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Chemical Reactions |
Changing one set of chemicals into a different set of chemicals that you start with |
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Reactants |
The substance that you start with |
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Products |
What you end up with |
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Exothermic |
Giving heat off (Break Bonds) |
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Endothermic |
Take in energy (Make Bonds) |
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Activation Energy |
The energy needed to start a reaction |
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Catalyst |
Speed up a chemical reaction |
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Enzymes |
Natural Catalyst- tend to be proteins |
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Inhibitor |
Slow down chemical reactions |
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Chemical Bonds |
Two or more substances chemical combines |
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Ionic |
Gain/ Lose electrons Ex: Na Cl |
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Covalent |
Sharing electrons Ex H2O |
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Cohesion |
Water to water |
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Adhesion |
Water attracted to other things |
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Solutions |
Clear mixtures |
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Solutes |
Gas or Solid Dissolved |
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Solvents |
Liquid Part |
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Mixtures |
Two substances that are physically combined |
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Homogenous |
Same - They tend to be clear |
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Heterogeneous |
Different- They tend to have color |
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Suspensions |
They DO settle |
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Colloids |
Do NOT settle |
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Organic Chemistry |
Studies carbon to a hydrogen bond |
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Monomers |
Single unit of a substance |
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Polymers |
Chain of single units working together |
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Lipids |
Fats, Oils, and Waxes |
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DNA |
Genetic Makeup |
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RNA |
Protein Production |
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Proteins |
Build body tissues/ repairs |
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SUGARS |
Basic building block of carbohydrates |
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DNA |
Basic building block nucleic acids |
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AMINO Aids |
Basic building block of proteins |