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Thermochemistry

Name ______________________  Block ______
EVHS Chemistry

Across
Measurement of the heat flow into or out of a system for chemical and physical processes
The amount of energy required (in words) to melt 83.6 g of iron (Fe) at its melting point (∆Hfus(Fe) = 13.8 kJ/mol)
Group of elements that exist as diatomic molecules in nature
The study of energy changes that occur during a chemical reaction or change in state
Vapor to liquid phase change
Decreases the Activation Energy of a chemical process
Element with 28 electrons
Solid to liquid phase change (another word for melting)
SI unit for measuring energy (heat)
Down
Elements with properties similar to both metals and non-metals
Liquid to solid phase change
Element with 30 electrons, 30 protons and 35 neutrons
Amount of heat absorbed or released during a chemical reaction or a phase change
Liquid to vapor phase change
Substance with the second highest specific heat capacity
When bonded to non-metals, form ionic bonds
Type of Energy associated to an objects motion. It increases with heat
A process with negative enthalpy. Heat is released to the universe
The amount of heat (q) that 0.311 g of Water absorbs when it is heated from 30 ⁰C to 85 ⁰C. [C(water) = 4.18 (J/g x ⁰C)]