General Chemistry 106 Exam 1 Chapters 1-2 Review Practice Questions (Exam 9/16/19) 2023 Updated

Solids - ANS-Atoms closely packed together Liquids - ANS-Have volume but no shape Gases - ANS-Are highly dispersed Sand is coarse (Physical or chemical property) - ANS-Physical Fruit easily turns brown when exposed to air (Physical or chemical property) - ANSChemical Sugar mixes very well with coffee (Physical or chemical change) - ANS-Physical Gaseous vapor observed when handling dry ice (Physical or chemical change) - ANSPhysical Rusting of an iron pan (Physical or chemical change) - ANS-Chemical Is it absolutely certain that food caused an allergy - ANS-No, it could be many other factors. Kelvin and what are on identical scales - ANS-Celsius Order of decreasing length (m,cm,km,nm) - ANS-km, m, cm, nm Convert 1.145 x 10^5 to decimal format - ANS-.0 Convert 4.653 x 10^-2 to a decimal number - ANS-0.04653 Convert 0. to scientific notation - ANS-3.215E-4 How many sig figs are in 0. - ANS-5.0 How many sig figs are in 300. - ANS-9.0 431.00791 + 52.5441 = (give the right amount of sig figs) - ANS-4.E2 0. to 3 sig figs - ANS-2.32E-2 Continues...