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
IHS Science Vcb 9th
Science Vcb
| Question | Answer |
|---|---|
| Social Science | Deals with human nature |
| Physical Science | mude up of chemistry & physics |
| Earth Science | 9 areas including geology & meteorology |
| Chemistry | science of matter and how it changes |
| Physics | science of forces & energy |
| Meteorology | study of the weather & the atmosphere |
| Bar graph | compares values of different items |
| matter | anything that has mass & takes up space |
| Element | a substance that cannot be broken down into a simpler substance by simple chemical means |
| molecule | the smallest unit of a substance that behaves like that substance |
| Natural science | how things happen in "nature" or how the whole univers behaves |
| Line graph | used to show changing data |
| SI units | international system of units |
| geology | physical nature & history of earth |
| Scientific notation | method of reducing the number of 0'sin a very big or very small # and expressingthem as a power of 10 |
| Scientific method | one organized series of steps uded to solve a problem |
| Physical properties | a characteristic that can be observed without changing the identity of the substance |
| Heterogeneous | when parts of a mixture are not evenly distributed |
| Chemical properties | describes how a substace changes into a new substance, either by combining with other elements or by breaking apart into new substances |
| Physical change | effects one or more physical properties of a substance without changing the identity of the substance |
| Chemical change | happens when one or more substances combine to form new substances with different properties |
| Homogeneous | parts are evenly distributed; the mixture is the same throughout |
| Pure substance | matter that has a fixed composition & definite properties |
| Immiscible | won't remain mixed; you will be able to see 2 layers |
| mixture | combination of substances that are not chemically combined |
| compound | substances that are made up of atoms of different elements |
| Density | measurement of how much matter you have comtained in a certain substance |
| miscible | able to be mixed |
| Atom | the smallest part of an element that still has all the properties of that element |
| significant figure | all the non-zero digits of a number & the 0's that are included between them that are final 0's & signify accuracy |
| Kinetic theory of matter | all matter is mado of atoms and molecules & are always in motion |
| Solid | particles vibrate in place; definite shape & volume |
| liquid | particles are closely packed but can slide past each other; definite volume but not shape |
| gas | particles in constant motion & far apart; no definite shape or volume |
| plasma | most common phase of matter in univers; no definite shape or volume but not a gas |
| energy | the ability to do work |
| temperature | the measure of the average kinetic energy of the particles of an object |
| thermal energy | the total kinetic energy of the particles of a substance |
| melting | changing a solid to a liquid |
| evaporation | changing a liquid to a gas |
| sublimation | changing of a solid directly to a gas without ever being a liquid |
| condensation | changing from a gas to a liquid |
| freezing | chaging a liquid to a solid |
| law of conservation of mass | mass cannot be created nor destroyed |
| law of conservation of energy | energy cannot be created nor destroyed |
| fluid | posses unique characteristics that allow things like jets to fly & ships to float |
| pressure | the ammout of force exerted on a given area |
| bouyant force | all fluids exert an upward bouyant force on matter |
| archimedes principle | the buoyant force on an object in a fluid is and upward force eequal to the weight of the fluid that the object displaces |
| viscosity | depends on the particle attraction; a liquid's resistace to flow |
| kinetic energy | the energy of an object while in motion |
| Atomic Theory | matter is made up of atoms |
| electrons | subatomic particle with negative charge |
| neutron | subatomic particle with no charge |
| proton | subatomic particle with a positive charge |
| atomic number | tells you how many protons are in an atom of an element |
| Avogadro's number | 1 mole of a substance is equal to the atomic mass from the periodic table |
| Valence electrons | determine the chemical properties of an atom |
| Democritus | Greek philosopher who suggested the universe is made of indivisible units |
| Rutherford | proposed that most of the mass of the atom was concentrated in the atom's center |
| Law of definate proportions | states that in a pure compound the elements combine in definite proportions to one another by mass |
| Nucleus | a central part about which other parts are grouped or gathered |
| Ion | charged particle |
| Isotope | element that vary in mass # because their # of neutrons differ |
| energy level | row in which the element is in from the tope of the periodic table |
| ground state | the lowest energy state of an atom or other particle |
| Dalton | English school teacher who revised the atomic theory in 1808 |
| Bohr | suggested that the energy of each electron was related to the path it follows around the nucleus |
| atom | comes from the Greek word "atomos", meaning unable to be cut or divided |
| mass number | equals teh total # of subatomic particiles in teh nucleus |
| mole | unit used to count particles |
| photon | a discrete bundle of electromagnetic energy. Photons are always in motion |
| excited state | when electron has a lot of energy and jumps from layer to layer (Electron transition) |
| Thomson | suggested that atoms where not indivisible |
| Periodic Table | a table of elements organized by atomic mass # |
| Mendeleev | found the 1st successful way to organize a periodic table; studied properties; looked for patterns |
| Periodic law | elements that have similar properites that occur at regular intervals |
| Period | each row of the periodic table; 7 periods in a periodic table |
| Groups | each column of the periodic table; all elements in a group have similar properites |
| Ionization | the process in which atoms gain or loose electrons so they have a filled outermost shell |
| S-orbital | 2 electrons |
| P-orbital | 6 electrons |
| D-orbital | 10 electrons |
| F-orbital | 14 electrons |
| stable atom | have a full outermost shell : 8 electrons |
| cation | an atom that has lost electrons to have an overall positive charge |
| anion | an atom that has gained electgrons to have an overall negative charge |
| metal | shiny solid that is stretchy, can be shaped, and a good conductor of heat and electricity |
| nonmetal | found on the right side of the periodic table (except hydrogen); can be solids, liquids, or gasses; dull, brittle, and poor conductors; insulators |
| semiconductors (metalloids) | can conduct electricity only under special conditions |
| insulator | material that does not conduct heat or electricity |
| alkali metals | soft, shiny and react violently to water; very reactive; often stored in oil |
| alkaline earth metals | tend to be harder, denser, stronger and have higher melting point; 2 valence electrons; react to +2 ions |
| transition metals | found in middle of period table; much less reactive than alkali or alkalline earth; stull form +1 ions; won't always form same charge ions |
| halogens | most reactive of non metals; have 7 valence electrons and the addition of one more electrons makes them stable so they will form -1 anions |
| noble gasses | inert; exist as single atoms not as molecules; alredy have full outer shells |
Created by:
kspil
Popular Physical Science sets