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2
| Question | Answer |
|---|---|
| matter | is anything that occupies space and as mass |
| mass | the quantity of matter an object has |
| element | substances that cannot be broken down chemicaly |
| atom | the simplest particle of an element that retains all the propeties of that element |
| nucleus | the central region of an atom that contains two subatomic particles |
| proton | in the nucleus of an atom has a positve chare. is a subatomic particle |
| neutron | is in the neucleus is a subatomic particle with no charge |
| atomic number | the number of protons in an atom |
| mass number | is eqaul to the total number of protons and neutrons of the atom |
| electron | is equal to the number of protons, negativley charged |
| orbital | a three dimensional region around a nucleus that indicates the proable location of an electron |
| isotope | atoms of the same elemnt that have diffrent number of neutrons |
| compound | made up of atoms or elements in fixed porportions |
| chemical bond | the attraccive forces that hold atoms together |
| convalent bond | forms when two atoms share one or more pairs of electrons |
| molecule | the simplest part of a substance that remains all of the properties of that substance and can exsist in free state |
| ion | an atom or molecule with an elctrical charge is called an ion |
| ionic bond | the attraction between a negative and positve of two ions |
| energy | the ability to do work |
| chemical reaction | one or more substances change to produce one or more diffrent substances |
| reactant | the things that are being reacted |
| product | the result of a chemical reaction |
| metabolism | the term used to describe all of the chemical reaction that occur in an organism |
| activation energy | teh energy used to start a chemical reacction |
| catalyst | a chemical substance that reduces the amount of activation energy that is neede for a chemical reaction to occur |
| enzyme | a portein that speeds up metabolic reactions without being permatley changed or destroyed |
| redox reaction | a reaction is which electrons are transferred between atoms |
| oxidation reaction | a reactnt loses one or more elctons thus being more positve in charge |
| reduction reaction | a react gains one or more electrons thus becoming more negative in charge |
| polar | an uneven distrabution of charge |
| hydrogen bond | the force of attraction between a hydrogen molecule with a partial positve charge and anothera tom or molecule with a partial or full negative charge |
| cohesion | a atractive force that holds molecoles of a single substance together |
| adhesion | the attractive force between two particles of diffrent substances |
| capillarity | teh attraction between moleclues that result 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 | is a substance in which the solute is dissolved |
| solvent | the substance in which the solute is dissolved |
| concentration | a solution is the amount of solute dissolved in a fixed amount of the solution |
| saturated solution | is one in which no more solute can dissolve |
| aqueos solution | solutions in which water is the solvent are universally important to livingt hings |
| hydroxide | |
| hydronium ion | |
| acid | |
| base | |
| pH scale | |
| buffer |
Created by:
BlackK16
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