Warm-Up 1. What 2 elements besides H and N make up the bulk of living matter? 2. An element has a mass of 207 and has 125 neutrons in its nucleus. How many protons and electrons does it have and where are they located? 3. What kinds of bonds form between water molecules?
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Warm-Up1. What 2 elements besides H and N
make up the bulk of living matter?2. An element has a mass of 207 and
has 125 neutrons in its nucleus. How many protons and electrons does it have and where are they located?
3. What kinds of bonds form between water molecules?
Chapter 2Part 2: Reactions & Inorganic Compounds
Chemical Reactions• Reactants Products
• Eg. 6CO2 + 6H2O C6H12O6 + O2
• Some reactions are reversible:• Eg. 3H2 + N2 2NH3
• Chemical equilibrium: point at which forward and reverse reactions offset one another exactly• Reactions still occurring, but no net change
in concentrations of reactants/products
3 Patterns of Chemical Reactions1.1. SynthesisSynthesis = combining atoms/molecules to
form larger, more complex molecule A + B AB Anabolic reactions
2.2. DecompositionDecomposition = breaking apart molecules AB A + B Catabolic reactions
3.3. Exchange Reaction Exchange Reaction = bonds made/broken to exchange parts