| Question |
Answer |
| catalysts | These can reduce the amount of activation energy needed to start a reaction. |
| energy | The ability to do work. |
| oxidation reaction | When a reactant loses one or more electrons becoming positive in charge. |
| reactants | The ‘ingredients’ in a reaction. |
| activation energy | The amount of energy needed to start a reaction. |
| enzyme | A protein that speeds up a reaction of works on a substrate without being changed or destroyed in the process. |
| reduction reaction | When a reactant gains one or more elections becoming negatively charged in the process. |
| products | In a chemical equation, these compounds and/or molecules are on the right hand side. |
| polar | A compound with an uneven distribution of charge. |
| hydrogen bond | This type of bond joins water molecules. |
| solution | A mixture in which one or more substances are uniformly distributed in another substance. |
| chemical reaction | Substances combine to produce one or more different substances that can not be separated by physical means. |
| metabolism | The term used to describe all the reactions that occur in an organism. |
| hydroxide ion | The OH- dissolved in aqueous solution that creates a base. |
| pH scale | A numerical chart that is used to compare acids and bases. |
| acid | Has a pH below 7. |
| base | Has a pH above 7. |
| solute | The substance dissolved in the solvent. |
| redox reaction | When electrons are transferred between atoms. |
| buffer | A substance that helps to maintain the neutrality of a substance. |
| concentration | The amount of solute dissolved in a solvent. |
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