and the shape that's in the mirror [entries|friends|calendar] Hali Rose [ userinfo | livejournal userinfo ] [ calendar | livejournal calendar ]

[19 Oct 2007|12:57am] i don't understand how this happened. post comment

[25 Jan 2005|06:04pm] START OVER: everyone tell me a secret. anonymously. 16 comments|post comment

[10 May 2004|07:08pm] Friends Cut post comment

[14 Apr 2004|08:40pm] haha friends only. 14 comments|post comment

2-1 for your copying pleasure [05 Feb 2004|08:37pm] Atom- The simplest particle of an element that retains all of the properties of that element Atomic Number- The number of protons in an atom Bond- Attachment Chemical Reaction- The progress of breaking down bonds, forming new ones, or both Compound- A pure substance that is made up of atoms of two or more elements Covalent bond- a bond that is made up of atoms of two or more elements Electron- A particle with a negative electric charge that orbits the nucleus of an atom Element- A substance that ordinarily cannot be broken down chemically to form simpler kinds of matter Energy level- a ring in an atom that holds electrons, the first ring holds at most 2 electrons, the second and third can each hold at most 8 Ionic bond- a bond formed my electrical attraction between two oppositely charged ions. Mass- a fundamental property of an object generally regarded as equivalent to the amount of matter in the object Matter- anything that occupies space and mass Molecule- a chemical structure composed of one or more atom Neutron- a particle in the nucleus of an atom with no electrical charge Nucleus- in an atom, the core of protons and neutrons in an eukaryotic cell, the organelle that containing most of the DNA and directs most of the cell’s activities. Proton- a subatomic particle with a positive charge 2 comments|post comment

2-2 [05 Feb 2004|08:37pm] Activation Energy- amount of energy required for a chemical reaction t start and to continue on its own. Catalyst- a chemical that reduces the amount of activation needed for a reaction but is not a reactant. Endergonic reaction- a chemical reaction that involves a net absorption of free energy Energy- the ability to do work or cause change Enzyme- a catalyst, usually a protein, in living systems Exergonic reaction- a chemical reaction that involves a net release of free energy Free energy- the energy in a system available for work Oxidation reaction- the chemical reaction in which the reactant loses one or more electrons, becoming more positive in charge Product- a compound or atom involved in a chemical reaction Reactant- a compound or atom involved in a chemical reaction Redox reaction- a redox-oxidation reaction in which electrons are transferred between atoms Reduction reaction- a chemical reaction in which a reactant gains one or more electrons, becoming more negative in charge. State- solid, liquid, or gas, a state of matter post comment

2-3 [05 Feb 2004|08:30pm] Aqueous solution- a solution in which water is the solvent Base-any substance that increases the concentration of hydroxide (OH-) ions when added to a water solution Buffer- chemical that neutralizes small amounts of acids or bases added to a solutions Concentration- the measurement of the amount of solute dissolved in a fixed amount of solvent Dissociation- the separating of a molecule into simpler molecules, atoms, radicals, or ions Hydronium ion- the H3O+ ion Hydroxide ion- the OH- ion pH scale- a numeric range that quantifies the relative concentrations of hydronium ions and hydroxide ions in a solution Saturated Solution- a solution in which no more solute can dissolve Solute- a substance dissolved in a solution Solution-a mixture in which one or more substances are uniformly dissolved in another substance Solvent- in a solution, the substance in which in which a solute is dissolved Acid- any substance that increases the concentration of hydrogen (H+) ions when added to a water solute Alkaline- one end of the pH scale, refers to the balance of bases post comment

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