LAB EQUIPMENT burner labratory thermo- meter pipette beaker erlynmeyer Flask DENSITY d=m V test tube graduated cylinder density = mass/volume 4g/mL. g/cm³ cross multiply if den- sity is given mLcm³ for volume crucible PARTICLE DIAGRAMS most dense. Celsius cokervin TO HE +273 cumec degree MEASURING this ruler measures to the tenths place. RULES: = 1.10cm always round 1 mort place than shown on the measuring tool ALWAYS view measurements from eye level read from the meniscus (graduated cylinder) significant figures →least dense CONVERSIONS use the conversions given to find the new conversions 1000 MI x IL 1000 1000 1.000 mL= 1000 AC I Liter micro nano pico K HD BacmMnp grams bigger smaller meters 0.0.0089040 5-all o's before don't count, all after natural #'s & the decimal do. b. 340 2-0's before the tenths place will only count if there's a decimal after it C. 340. 3 The O here counts because there is a decimal aftor it. if you're converting left to right, the con- version will be smaller than the original # d. 37890.00 7 If there are natural numbers before the decimal, anything after it counts e. 0.06 f. 1000 1 If there are no natural numbers before the decimal, sig figs start at the first natural # after the decimal 1- no decimal point after the Os so only natural #'s count. SCIENTIFIC NOTATION negative exponent=move decimal number will be smaller out of notation positive exponent=move decimal → number will be bigger out of notation CHEMICAL CHANGE/PROPERTY change in atom formation undergo bond breaking/ making to form something new anything having to do with reactions/reactivity grapnite diamond ex flammabitiny, Na is explosive in PERCENT ERROR % error = laccepted value-experimental accepted value x 100 *always include units in answers! PHYSICAL PROPERTIES quality of matter that can be observed or measured with- out changing the bonds. no reactions, only things you can observe or see, or data given. mestereeze mass point volume ex the densing of water is Igiom 4.0 is clear.