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
Ch.1 and 6 Basic Sci
| Question | Answer |
|---|---|
| Experimental Group | The variable |
| Independent Variable | The factor that is tested and might affect the outcome of the experiment. Ex. The supplemental feeding in the experiment. |
| Dependent Variable | The variable that results from or DEPENDS on changes to the other variable. The change in something. Ex. The change in the kittiwakes energy levels. |
| Constant(science usage) | A factor that remains fixed during an experiment while independent and dependent variables change. |
| Conclusion(science usage) | Scientific usage: Judgement, decision, or opinion formed after an investigation. |
| Atom | Smallest unit of matter that still retains properties of an element. Made of protons and neutrons. From Greek word atomos meaning non divisable. |
| Nucleus (for atom, not for a cell | The center of an atom. Where protons and neutrons are located |
| Protons | Location: In nucleus of an atom Charge: positive charge |
| Neutrons | Particles with no charge and located in nucleus. |
| Electrons | Negatively charged particles that are located outside of the nucleus. Constantly move around nucleus in levels. |
| Element | Pure substance that cant be broken down into other substances by chemical or physical means. Made of one type of atom. Over 100 known and 92 occur naturally. ORganized into table of Elements. |
| Atomic number | a unique number that identifies how many protons are in one atom of that element. |
| Mass number | the number of protons plus neutrons.The number that tells how many protons and neutrons are in its atoms. |
| Isotopes | Atoms of the same element with different number of neutrons. Identified by adding the number of protons and neutrons. |
| Compound | a pure substance containing two or more elements in a fixed ratio. |
| Energy Levels (a.k.a electron shells) | Each shell can hold up to a specific number of electrons. The innermost shell is full with 2 electrons, the outer most shell can hold up to 8 electrons |
| Covalent Bond | A type of strong chemical bond in which two atoms share one or more pair of electrons |
| Molecule | A molecule is any compound that is made up of at least two atoms that are held together by a covalent bond. |
| Ion | an atom or molecule with an electrical charge resulting from a gain or loss of electrons |
| Ionic Bond | Two ions of the opposite charge attract each other and when the attraction holds them together its this type of bond. |
| Chemical Reaction | a process leading to chemical changes in matter the starting materials are called reactants and the resulting materials are the products |
| Reactants | The starting substances on the left side of the arrow. |
| Products | the substances formed during the reaction also on the right side of the arrow |
| Activation Energy | The minimum amount of energy needed for reactants to form products in a chemical reaction is called this |
| Catalysts | Is the substance that lowers the activation energy needed to start a chemical reactions. Does not increase the product made or get used up in the reaction. |
| Enzymes | Special proteins that speed up the rate of chemical reactions in biological processes. Can be used again |
| Substrate | The reactants that bind to the enzyme are these |
| Active site | The specific location a substrate binds on an enzyme |
| Polar Molecules | Molecules that have an unequal distribution of charges. That means they have oppositely charged regions. |
| Non-Polar Molecules | A bond between 2 nonmetal atoms that have the same electronegativity and have equal sharing of the bonding electron pair |
| surface tension | a measure of how difficult it is to stretch or break the surface of a liquid |
| Evaporation | the process by which water is converted from its liquid form to its vapor form and thus transferred from land and water masses to the atmosphere. |
| Heat | energy in transit from a high temperature object to a lower temperature object |
| temperature | a physical property related to the average kinetic energy of the atoms or molecules of a substance |
| Cohesion | When thing have tendency to stick together its called this |
| Hydrogen Bond | a weak interaction involving a hydrogen atom and a fluorine,oxygen or nitrogen atom, Describes polarity |
| Solution | Solution = solvent=solute another word for homogeneous mixture. |
| Solvent | Water is a versatile solvent. The dissolving agent. |
| Solute | the substance dissolved |
| Homogeneous Mixture | When a mixture has a uniform composition throughout it is this type of mixture. Also called a solution. |
| Heterogeneous Mixture | The components remain distinct and you can tell what they are. EX. Colloid and suspension |
| acids | A compound that donates H ions are called these. |
| Bases | A compound that donates OH ions are called this |
| pH | Stands for potential Hydrogen. To describe the acidity of a solution we us a pH scale. |
| Buffers | resist changes in pH |
Created by:
zazatwisty
Popular Biology sets