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Science
| Question | Answer |
|---|---|
| Matter | Anything that takes up space |
| Mass | The quantity of matter an object has |
| Elements | Substances that cannot be broken into simpler types of matter |
| Atom | The smallest part of an element. Still retains all the original properties of the element |
| Nucleus | (central core) comprised fo protons and neutrons. |
| Protons | Particles with a positive electrical charge |
| Neutrons | Have no electrical charge- they are neutral |
| Atomic Number | The number of protons in the nucleus of an atom. An ordering device for the periodic table. |
| Electron | Has a negative charge |
| In atoms | there are an equal number of protons and electrons so that the overall charge is zero |
| Molecule | When atoms of one element are combined with atoms of another element |
| Compounds | Elements combine with other elements. |
| Chemical reactions | Atoms undergo to come to a stable state, some bonds are broken, rearrange, form new bonds. |
| Covalent Bond | Two or more atoms share one or more pairs of electrons. |
| Ionic bond | An electron from one atom is transferred to an atom of another element. An attraction between the + and - ion |
| Ion | An atom with an electrical charge |
| Free energy | Yields a net release |
| Activation energy | The amount of energy necessary to begin any chemical reaction |
| Catalyst | A chemical substance that decreases the amount of activation necessary for a chemical reaction |
| Oxidation reaction | Occurs when an atom loses on or more electrons, resulting in a positive charge. |
| Reduction reaction | An atom gains one or more electrons, resulting in a negative charge. |
| 3 kinds of matter | gases, liquids, and solids |
| kinetic energy | Is the energy of an object in motion. All forms of matter are constantly in motion. |
| Particles of Gas | Are far apart, move rapidly, and have random motion. |
| Gas pressure | The result of billions of particles colliding with an object simultaneously |
| Vacuum | Empty space with no particles and no pressure |
| Liquid | Forms when the temp of the gas lowers enought for condensation to occur |
| Vaporization | When a liquid can be turned into a gas |
| Evaporation | When a liquid can be turned into a gas and does not include boiling. |
| Solid | Restricted movement, orderly, repeating. |
| With Density | The lower the higher density it has |
| Archimedes principle | An object placed under water desplace a volume of water equal to its own volume |
| Gas A is noticed one minute before gas B | Gas B has a higher density than that of gas A. Gas B has the higher density so it would travel slower |
| Charles Law | The volume of a gas varies directly with the absolute temp. |
| Boyles Law | The volume varies inversely with the pressure at a constant temp. |
| ICE | Choose 3 lower levels |
| Fridge door left open for one hour | The room temp will increase |
| Water and Aluminum | Water heats slower and aluminum cools faster |
| The best electrical conductor | Metals (left side of table) |
| Isotopes | have different number of neutrons |
| Comparing toasters the one generating the most heat is | higher voltage and higher resistance |
| An electric current can be carried by movement of electrons and | ions |
| The more acid | the smaller the number |
| The stronger the base | the bigger the number |
| A difference of one pH unit represents a concentraion difference of | 10 |
| A difference of two pH units represents a concentration difference of | 100 |
| pH of 7 is a | neutral salt |
| Land on the moon you will | have the same mass on the moon as on earth |
| When Pushing or hoisting someing up directly | the amount of work by either is the same |
| A car traveling at 60mph comes to a rapid stop two types of energy most involved are | kinetic and heat |
| A person swings a ball in a circle and the string breaks near the point of attachment the ball with travel | in a straight line |
| Involve both chemical and physical changes | An egg is hard boiled |
| Actinides | the row of elements below the periodic table |
| Adhesion | molecular attraction between dissimilar molecules |
| Aerobic | with oxygen |
| Anaerobic | without oxygen |
| Agglutination | clumping of foreign cells |
| Agonist | muscle that bears the major responsibility for effecting a particular movement |
| Alpha particle | a cluster of 2 protons and 2 neutrons emitted from a nucleus in one type of radioactivity |
| Amnion | fetal membrane that forms a fluid filled sac around the embryo |
| Anion | an atom or molecule with a - charge |
| Articulation | the junction of two or more bones |
| Atomic weight | the weight in grams of one mole |
| Basal Metabolic Rate (BMR) | rate at which energy is expended by the body |
| Bowmans capsule | a network of capillaries encased in a membrane in the kidney for purpose of filtraion |
| Cathode | the + electrode at which reduction occurs |
| cation | an atom or molecule with a + charge |
| Colloid | suspension that does not separate on standing |
| Emulsion | suspension of two liquids which are incapable of mixing or attaining homogeneity |
| Endocrine system | internal organs |
| Erthrocytes | red blood cells |
| Faradays Law | the amount of a substance to the quantity of electric charge |
| Fermentation | release of energy from sugar without the use of oxygen |
| Fulcrum | the fixed point on which a lever moves when a force is applied |
| Hemoglobin | oxygen transporting component of erythrocytes |
| Mast cells | immune cells that function to detect foreign substances in the tissue |
| Mitosis | cell duplication |
| Molarity | the number of moles of solute in 1 liter of solution |
| Solute | the substance that is dissolved in a solution |
| Solvent | the host in a solution |
| Tidal air | amount of air during normal breathing |
| Ventrally | in the front, near the bottom |
| Accuracy | a reflection of how near the actual measurement the taken measure is. |
| Precision | a reflection of how close multiple measurements are to one another. |
| Density | is the mass of the object in relation to its volume |
Created by:
Kos03
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