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40 Cards in this Set
- Front
- Back
- 3rd side (hint)
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element
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cant be broken down chemicly
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-
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intensive property
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have values that do not depend on amount of sample
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temp, melting point
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extensive property
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values that do depend on amount
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length, volume
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alkali metals
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group 1A, shiny, soft metals, react rapidly with water, produce basic products, never found in pure state in nature
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group
texture react with acid or base found\not in nature |
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Alkaline Earth metals
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Group 2A, lustrous, silvery metals, less reactive then 1A, never found in a pure state
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group
texture react found\not in nature |
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Halogens
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Group 7A, colorful, corrosive, nonmetals, found in nature only in combonation with other elements
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metals
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largest category
left Side of table almost all solid at room temp Silvery Shine malleable good conductor of heat & electricity |
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Nonmetals
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found on right Side
11 of 17 are gas 1 of 17 is liquid 5 of 17 are solid None are Silvery Several brightly colored brittle poor conductors of heat & electricity |
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Semi metals
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border metals and nonmetals
properties are intermediate most silvery all solid brittle poor conductor of heat & electricity |
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mass
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Kg
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length
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M
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Temp
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K
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amount of substance
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Mol
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Time
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S second
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electric current
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A ampere
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luminous intensity
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cd candela
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Area
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m2
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volume
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M3
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Density
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kg/ ms
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speed
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ms2
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Acceleration
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m/s2
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force
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(kgXm)/s2(n)
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pressure
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kg/(mXS2)(Pa)
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energy
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(Kg X m2 /S2 (J)
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Density
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mass / volume
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accuracy
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how close true valve of
given measurement is |
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precision
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how well a number of
independent measures agree with each other |
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Democritus
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said all elements composed
of tiny particles called elements |
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Dalton
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Proposed theory of matter
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Daltons theory
of matter |
1) elements are made
of tiny particles called elements 2) each element is characterized by the mass of its atoms. same have same 3) chemical combos of elements to make different substances occurs when atoms join together 4) chemical reactions only rearrange the way that atoms are combined. the atoms Stay unchanged |
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Thomson
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used cathode ray tube
to discover electrons |
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mass of an
electron |
elm = 1.758820x10^8 C/g
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R.A. Millikan
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oil drop experiment
M= 9.109382x10^28g |
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Rutherford
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alpha particles
on gold foil found the nucleus |
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percent yeild=
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actual yeild of product/theoretical yeild of product X100%
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molarity=
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moles of solute/liters of solution
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moles of solute=
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molarity X volume of solution
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volume of solution =
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moles of solute/molarity
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multiple=
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molecular mass/emperical formula mass
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mass=
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volume X density
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