Chem 1 mid term
Terms
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- homogenous mixture
- one that has unifrom composition throughout and a single phase also called a solution
- heterogeneuos mixture
- one that does not have a uniform composition thourghout and is in more than one phase
- gas
- a form of matter that flows to conform to the shape and volume fo tis container easily compressed
- vapor
- gas state of a substance that is a liquid at room temperature
- sig figs rules (5)
-
-all non zero numbers
-zeros between nonzeros
-zeros to the right of the decimal place
-zeros that are placeholders not significant .002 430 <-neither 0's are sig figs
-counting #s defined as constants have an infinite # of sig figs - percise
- results close
- accurate
- close to true answer
- alpha particle radiation
-
2 protons and 2 nuetron +2 charge 4He
2 - beta
-
1- charge 0B
-1 like an electron - down
- group family
- across
- period series
- radius
- down increases across decreases
- I.E.
- down decreases across increases
- E.A.
- down decreases across increases