2-2 Energy All living things use energy Energy

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Presentation transcript:

2-2 Energy All living things use energy Energy ·Ability to do work or cause change ·There are different types: electrical, mechanical, radiant, thermal, and chemical. ·Can change from form to form. *EX. Light bulb filament. Filament (electrical) to light (radiant) to heat (thermal).

States of Matter 3 Phases *Solid *Liquid *Gas All atoms and molecules are in constant motion 3 Phases *Solid *Liquid *Gas

Solid Tightly linked Definite shape Vibrate in place

Liquid Not so tight Maintains fix volume Moves freely

Gas Loose Fits container Move rapidly

Energy and chemical reactions · CO2 + H2O  H2CO3 · 3 atoms + 3 atoms = 6 atoms. The number of atoms on each side is equal. This reaction takes place in our blood · The double arrow means that the reaction can take place in both directions ·CO2 and H2O are reactants H2CO3 (carbonic acid which is good for homeostasis) is the product

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