Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
2.2-2.3 Terms
| Term | Definition |
|---|---|
| energy | the ability to do work |
| chemical reaction | when one or more chemical substances change to produce one or more different substances |
| reactants | a substance or molecule that participates in a chemical reaction (shown on the left side of the equation) |
| products | a substance that forms in a chemical reaction |
| metabolism | all the chemical reactions that occur in an organism |
| activation energy | the amount of energy needed to start the reaction |
| catalysts | chemical substances that reduce the amount of activation energy that is needed for a reaction to take place |
| enzyme | a protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed. |
| redox reaction | reaction in which electrons are transferred between atoms |
| oxidation reaction | when a reactant loses one or more electrons, thus becoming more positive in charge |
| reduction reaction | when a reactant gains one or more electrons, thus becoming more negative in charge |
| polar | describes a molecule with opposite charges on opposite ends |
| hydrogen bond | the force of attraction between a hydrogen molecule with a partial positive charge and another atom or molecule with a partial or full negative charge |
| cohesion | an attraction that holds molecules of a single substance together |
| adhesion | the attractive force between two particles of different substances ex: water molecules and glass molecules |
| capillarity | the attraction between molecules that results in the rise of the surface of a liquid when in contact with a solid |
| solution | a mixture in which one or more substances are uniformly distributed in another substance |
| solute | a substance dissolved in the solvent |
| solvent | the substance in which the solute is dissolved |
| concentration | the amount of solute dissolved in a fixed amount of the solution |
| saturated solution | a solution in which no more solute can dissolve |
| aqueous solution | solution in which water is the solvent |
| hydroxide ion | the OH- ion |
| hydronium ion | the H30+ ion |
| acid | any compound that increases the number of hydronium ions when dissolved in water; turns blue litmus paper red and react with bases and some metals to form salts |
| base | solution that contains more hydroxide ions that hydronium ions |
| pH scale | a scale for comparing the relative concentration of hydronium ions and hydroxide ions in a solution |
| Buffers | chemical substances that neutralize small amounts of either an acid or a base added to a solution |
Created by:
WalshC20
Popular Biology sets