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Chem-Sturnick Test 1


1M= KM 1.609
1YD= ft 3
1 Gal= Qt 4
1Qt= Pt 2
1Pt= c 2
1Ft= cm 30.48
1Mi= yrd 1760
1Kg= lbs 2.2
1Lbs= g 4536
1km= mi .6214
1in= cm 1.54
1L= Qts 1.06
1m= in 39.37
1in= cm 2.54
1ft= in 12
Precision measures how closely data is grouped
Gas takes shape of containerundefined volume (takes volume of container)Compressionable
Micro 10^-6
Mass is- the quantity of matter in an object
experimantation is- testing in a controlled environment.It must be applicable and reproduceable
Theory- Answers how and why, generally useful but not 100% applicable.
---------------------------Base-------------------------------- Kilo(10^3)Hecta(10^2)Deka (10^1)BASEDeci(10^-1)Centi(10^-2)Milli (10^-3)Micro (10^-6)
immiscible layered
Volume= space
Weight based on Gforce
Law of Conservation of Energy Energy can be neither created nor destroyed
Law summarizes all observable behavior(no known acceptions)
Milli 10^-3
Density= mass/volume
Volume= mass/density
Mass= density*volume
SI unit of mass Kilograms (Kg)
SI unit of volume Liter or dm^3
SI unit of time sec
SI unit of length meters (m)
SI unit of temp Kelvin(K)
Pure substance Constant compositionElements-simplest form (atoms)Compounds-2 types of atoms combined in a specific mass ratio
Solid defined shape and volume
Base 10^0
Accuracy measures how closely data agrees w/ known or calculated value
Observation Measurement of some aspect in natureQualitative-doesn't contain numeric observationQualitative- Has number w/ it
Hypothesis educated guess- possible explaination- idea why it happens
Centi 10^-2
miscible mixed
mixture greater than one pure substance, composition variesHomogenious- same throughoutHeterogenious- Composition varies throughout
Conservation of Mass Matter is neither created nor destroyed in a chemical reaction
Sig Fig Zeros Leading-(Before non-zeros)=Nevercaptive-(between non-zeros)=AlwaysTrailing-with decimal-Yes -without decimal-No
Kilo 10^3
Chemistry The study of matter and how it interacts
deci 10^-1
Physical properties Those properties displayed w/out changing its composition
Chemical properties Those that a substance displays only through changing it's composition
Specific Gravity ratio of densitys where-Density of gravity,T/Density of water,T
Liquid Indeterminate shape takes shape of container. Defined volume
Metric Moving decimal
Scaler 1 dimensional
1 tblsp 3tsp
Seperating mixtures through physical changes Decanting, Distillation, Filtration
Decanting carefully pouring off
Distillation A process where the mixture is heated to boil off the more volatile (easily evaporable) liquid
Filtration mixture is poured through filter paper, usually held in a funnel
SI unit of energy Joule (J)
calorie (c)amount of energy to raise temp of 1g of water by 1 degree Celsius. =4.184 joules
Calorie (Cal)=1000 calories
Kilowatt-hour (kwh)=3.60x10^6 joules
Heat capacity quantity of thermal energy required to raise the temp of given amt of the substance by 1 degree celsius.If exprssed in grams it is called the specific heat capacity
Kelvin (K) same size as celcius, but avoids negative temps water freezes- 273 KWater boils at 373 K
1L= 10^3cm
1dm^3=1L= 103cm3=10^3ml
1ml3= 10^3dm^3
Kinetic energy energy associated with its motion
Exothermic reaction describes a process that releases heat energy
Endothermic reaction A chemical reactuon that absorbs energy from the surroundings
Electrical energy energy associated with the flow of electrical charge
Celsius Water freezes at 0 degree CelciusRoom Temp at 22water boils at 100
Fahrenheit water freezes at 32Room temp at 72water boils at 212
Potential energy energy associated with it position
Chemical Energy energy associated with potential chemical changes
K= celsius + 273
Celsius= (Fahrenheit-32)/1.8
Created by: harperbea