Chapter 1 Vocab Flashcards
Atoms
single like *
Molecules
of same atom like H2 **
Molecules of a compound
like H2O .
Mixture of elements and a compound
like a granite countertop * ** .
Mixture
matter with multiple diff substances
homogeneous or heterogeneous
homogeneous mixture def
looks like 1 thing .. ex filtered sea water
heterogeneous mixture def
looks like you can see multiple things… ex sand
Physical properties def
we can observe it without altering substance identity
physical properties examples
color, hardness, melting point, boiling point, density
chemical properties def
how a substance reacts and observe changes of substance identiy
chemical properties examples
flammability, corrosiveness, reactivity
physical changes def and example
only change how it looks like heating up water
chemical changes def and example
changes atom arrangement and how it looks. like lighting stuff up on fire
signs of a chemical reaction/change?
temp change, light given off, forms gas, color change, change in odor, explosion occurs, a precipitate forms
how do we seperate components of a mixture (3 ways)
filtration, distillation, column chromatography
