Notes in MBS-1 Chemistry

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MBS-1 Chemistry Deck

Status	Last Update	Fields
Published	08/19/2024	Matter = something that occupies a space and has a mass (weight) and can be perceived by our senses *weight depends on where the matter is being …
Published	08/19/2024	physical properties = observationschemical properties = if something is going to happen to it at the atomic level
Published	08/19/2024	physical property = characteristic which can be observed without changing the chemical identity
Published	08/19/2024	chemical property = characteristic of matter pertaining to its chemical reaction
Published	08/19/2024	physical properties = viscocity, ductility, conductivity forms of physical property: separation, blending, solubility, density
Published	08/19/2024	chemical change/chemical reaction = where the composition changes. involves a transformation of the matter to make one or more different kinds ex…
Published	08/19/2024	three phases of matter: solids = fixed shape and volume liquids = fixed volume but takes shape of its containergases = compressible fluid th…
Published	08/19/2024	molecules prefer to be in the most energetically stable state reactions occur because molecules go from a state of instability (reactive) to a st…
Published	08/19/2024	hypothesis = is tentative, meaning that it can be altered if results do not support the current hypothesis
Published	08/19/2024	law = concise verbal mathematical description that works all of the timedeals with 2 factors at a time
Published	08/19/2024	theory = explains how phenomena occur based on a different series of observations theories deal with relationships between multiple factors&nbs…
Published	08/19/2024	Henry's law: C=kP if pressure of the gas over the liquid increases, the amount of gas that is dissolved in the liquid will increase proportionall…
Published	08/19/2024	SI Units: length = m (meters) volume = m3 (meters cubed) Mass = kg (kilograms) Density = kg/m3 and g/m3  (Dens…
Published	08/19/2024	significant number rules: 1. any number between 1 and 9 is significant 2. any zero between significant numbers is also significant 3. a…
Published	08/19/2024	Sig figs for multiplication/division: answer should have the lowest number of sig figs Example: 230/760.0 = 0.3026 230 = 2 sig fig…
Published	08/19/2024	Sig figs for addition/subtractionanswer is based on places after the decimal point example: 83.5 + 23.28 = 106.78 83.5 has one place af…
Published	08/19/2024	Rounding rules: 1. If the last digit is greater than 5, then the preceeding number is increased by one 2. If the last digit is less than 5, …
Published	08/19/2024	Precision = close but not equal to the accepted value (How close to each other the values are) Accurate = the experimental value is identical to …
Published	08/19/2024	types of errors in data collection: systematic = errors due to instrumentation random = errors that occur due to chance. Instrumental + huma…
Published	08/19/2024	intensive properties = independent of the amount of material. It doesn't matter how much there is, the value will always be the same extensive pr…
Status	Last Update	Fields