What I Need to Know

What do I expect to know for the final? scientific method and why it is beta to keep accurate records. -so others sack repeat the experiment exactly. end b/t do by and chemical receptions -physicalonly the resign is changed (solid/liquid/gas) -chemicalNEW substances ar formed (ex. Rust, burned sugar, soot, ) Changes of states of press (boiling, melting, evaporation, etc.) wet freezes and melts at 0C pee boils and evaporates at 100C Sub segmentic particles (neutrons/protons/electrons), their charges, locations, and functions. -electrons (-), protons (+), neutrons (o) -protons AND neutrons be INSIDE the nucleus. -Atomic cast recognizes you the flesh of protons, Its ALSO the essence number of electrons. Periodic bill sticker and the locations and definitions of the corpuscleic deal, atomic number, metals, nonmetals, nonmetals. -Metalloids pass water BOTH metallic and metalloid properties. They BORDER the zig zag line on the table. -Metalloids ar usually more breakable and less malleable than near metals. -NONmetals be located on the RIGHT of the periodic table. nothing-releasing and endothermic answers (how can you tell which is which) -exothermic GIVES OFF heat (energy) and -endothermic TAKES IN heat (energy) -ex.

Nitrogen + group O + energy nitrogen oxide endothermic b/c energy went IN. Law of conservation of chaw and law of conservation of energy - muckle ---the mass before a reply will ALWAYS tinct the mass after a reaction. -energyenergy cannot be created/ destruct only changed forms. Ions-what are they? When are they positive and when are they forbid? Positive ion (ex. Fe+)---the atom has LOST electrons (so it lost a negative charge and became positive). avoid ion (ex. Cl-)---the atom GAINED an electron (so it gained a negative charge and became negative). pussyfoot in how to read a line graph of temperature vs. time. If temperature of a reaction DECREASES over time, therefore its exothermic (it GAVE off...If you desire to stand a abundant essay, order it on our website: Ordercustompaper.com

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