Cheatography

# Physical Science Cheat Sheet (DRAFT) by Taybeas

studying sheet for finals

This is a draft cheat sheet. It is a work in progress and is not finished yet.

### Essentials for science

 Essential Notes The three major catagories of science are: -Life science -earth science -Physical Scienc­e(s­tudies matter and energy) Lab Safety -make sure you are following all of the commmon sense lab safety rules some of these may be: -listening to the instructor and read the procedure -Keep food and drinks outside of the lab{{nl}] -No horseplay CER A CER is a statement on a certain opinion on a subject and you're trying to support it with Evidence and reasoning -C is for claim: answers the original question -E is for Evidence: data to support the claim -R is for reasoning: it explains and proves your thinking Conver­sions things to keep in mind about conversions: -Mass is how much matter is in an object - density is how much mass per volume there is in a material --Its found by dividing the objects mass and volume ---density measur­ements are one gram per cubic centimeter -volume is the amount of space occupied by an object Geps volume=mass/density mass=volume(times)densitydensity=mass/volume

### Atoms, Atoms Everywhere

 basic parts of an atom the nucleus has a positive charge -protons have a positive charge -nuetrons have a nuetral charge -electrons have a negative charge -energy levels: the rings around the nucleus Bohr Model energy level: -first one: holds up to 2 -second electron hold up to 8 -third electron holds up to 16 Isotopes finding Isotopes electron arrang­ements electrons organized