Chapters 4B-5B

ceivers4
Flashcards by ceivers4, updated more than 1 year ago
ceivers4
Created by ceivers4 about 7 years ago
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Steps to the midterm

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Question Answer
Energy Level 1 2 Electrons
Energy Level 2 8 Electrons
Energy Level 3 18 Electrons
Energy Level 4 32 Electrons
Why are the noble gases unreactive? They have all their valence electrons
Physical Change affects size, shape and state of matter. ex) water boiling or dew forming
Chemical Change Results in the formation of a new substance that has brand new properties then the original. ex) wood burning or eggs cooking
Scientific law, requires us to balance chemical equations Law of conservation of mass
Law of Conservation of Mass "the mass of the products is always the same as the mass of the reactants"
Reaction where energy is absorbed Endothermic Reaction
Reaction where energy is released Exothermic Reaction
Activation Energy Energy needed to start the reaction
Temperature Increase- speeds up reaction Decrease- slows down the reaction
Concentration Increase- speeds up reaction Decrease-slows down reaction
Particle Size Increase- slows down the reaction Decrease- speeds up reaction
Catalyst Speeds up the reaction ex)enzyme
Inhibitor Slows down the reaction, ex)BHT
Examples Exothermic- hand warmer Endothermic-ice pack
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