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29 Cards in this Set
- Front
- Back
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what's Matter?
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Fundamental building blocks of nature
fundamental building blocks of nature. |
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What's elements?
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Basic unit of matter
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What's Energy?
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Capacity to do work(put matter into motion)
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What's potential energy?
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Energy stored in structure
A)water stored in a lake uphill B)Chemical bonds of glucose molecule. |
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What's Kinetic energy?
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Energy in an object in motion.
Water in a stream->allows mill to grind corn broken glucose bonds->ATP->muscles work |
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Chemical energy?
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Energy in chemical bonds
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What's ATP?(IT's chemical energy)
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Adenosine triphosphate
-stores energy |
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Electrical energy
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Energy of separated charges
+pole/-pole separate charge nervous impulse run just like a battery |
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Mechanical energy
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Energy of matter in motion
bowling ball transfers energy o move pins. muscle motion ->ATP ->contraction of muscle |
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characteristics of differnent particles.
proton+ Neutron* electron- |
neutron defines isotopes.
proton/elctronon determine element, *electron determines bonding properties!!!!!!!!!!!!! |
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Number of PROTONs =
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Atomic Number
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#Proton +# Neutron =
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atomic mass
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isotope -?
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same number of protons ->same element BUT differ # Neutrons
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Ion?
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Any atom with a positive or negative charge
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Anion ? 아니...
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An ion with a NEgative charge
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Cation
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Positive charge
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Elctron Shells
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electrons occupy "shells" as they orbit around the nucleus
(2, 8, 8) |
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First Shell -2 elements
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H, he
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2d shell- there are 8 elements
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Li,Be,B,C,N,O,F,Ne
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3th Shell- 8 elements
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Na,Mg,Al,Si,P,S,Cl,Ar
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Chemical Bonds.
ionic bond,covalent bond(POlar &NON-polar Molecule) |
*ionic- ONE atom donates ElECTRON(S) to ANother.
*Covalent-TWO atoms share one/more elctrons. |
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An example of Ionic bond
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Sodium Chloride (table salt)
Na+ Cl- |
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Examples of COvalent Bond
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Methane (CH4)
Carbon Dioxide(Co2) Ammonia (NH3) |
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AN example of Polar molecule
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Elctron sharing is UNequal.
Water (H20) |
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NON-polar
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Methane (cH4)
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primary elements
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CA,P
(calcium,phosphorus) |
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Trace Elements
(17) |
K,S,Na,Cl,Mg,Fe,Cu,Zn,Mn,Co,Cr,Se,Mo,F,Sn,Si,V
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Calcium
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Bones,teeth,muscle and nerve action,blood clotting
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Phosphorus
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Bones,teeth,DNA,RNA,ATP.
Energy transfer |
