Unit 1 Flashcards
(27 cards)
Precision
How close a SERIES of measurements are to one another
Error
Difference between accepted value and experimental value
Measuring Scale NumonicTech
M..K H D 🅱 d c m .. 〽️ .. n .. p
Antoine Lavoisier
Combustion analysis
Law of conservation of mass
Physical Descriptions:
Boil Freeze Melt Condense Break Split Grind Cut Crush
Chemical Descriptions:
Burn Rot Rust Decompose Ferment Explode Corrode
Pacific Method»_space;»
If decimal is present approach decimal from the pacific, go to first non zero digit and every number to the right of it is sig
Atlantic
If decimal is absent approach from the Atlantic go to the first non zero digit and every number to the left of it is significant
Pure substance
Sample of matter with both definite and constants, with distinct chemical properties
Element
Anything on the periodic table
Compound
Mixture of elements
Mixture
Physical combination, two or more pure substances combined w/o forming any new substances
Physical Properties
- observable w/o changing chemically
- no compositional change
- reversible
Chemical Properties
- describes ability to be changed into another substance chemically
- irreversible
Electrolysis
Breaking compounds to their element form
Intrinsic / Intensive
Independent of the quantity of matter present; inherent characteristics…also called characteristic properties
Extrinsic/ Extensive
Directly related to the amount of material being measured… Meaning it will change when you change the amount of substance
Organic Chemistry
Study of all chemicals containing carbon
Inorganic Chemistry
Study of chemicals without carbon
Biochemistry
Study of the process that take place in an organism
Analytical Chem
Focuses on the composition of matter
Physical Chem
Deals with the energy transfer that occurs when matter goes through change
Law of conservation of mass
In any physical or chemical change mass is conserved
Accuracy
How close ONE measurement is to its true value
