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15 Cards in this Set
- Front
- Back
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Matter
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is anything that occupies space and mass
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mass
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the amount of matter in an object
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energy*
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the capacity to do work
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*potential energy
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stored energy
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*kinetic energy
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associated with matter in motion
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chemical reactions
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Invovlve energy changes
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1.chemical energy
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1.a form of potential energy
stored within the chemical bonds |
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2.chemical energy
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2.is stored in the food we eat the bonds are broken down and eventually converted into kinetic enrgy which is
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3.Chemical energy
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3.used by the body:
*ATPproduction *Muscle action *Heat production |
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Energy
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can be neither created nor destroyed.It can only be converted from one to the other
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The law of conserving energy
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Energy can be neither created nor destroyed. It can only be converted from one form to another
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Physiology
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Most of it is driven by the conversion of potential energy into kinetic energy and back
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Structure of the atom:
Atoms- Subatomic particles: |
Nucleus~protons(p+) and neutrons(n0 neutral)
electrons(e-)surrounding the nucleus in 1 or more electron shells Valence.Form a negative charged cloud. shell 1=2 electrons max 2=8e- 3=8e- |
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Number of electrons=
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number of protons(neutral atom)
atomic number=number of protons which defines the atom.example,carbon=6 |
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Atomic Mass=
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number of protons + neutrons
example,carbon =12 |
