Chapter 2 Flashcards
matter can be changed
physically or chemically
energy
the ability to do work
forms of energy
1)chemical 2)electrical 3) mechanical 4)radiant
energy used in body
electrical and chemical
4 elements that make up 96% of our body
Carbon, Oxygen, Hydrogen, Nitrogen
Ionic bond
when an electron is completely transferred from one atom to another
Covalent bond
atoms share an atom
anion
negatively charged
cation
positively charged
hydrogen bonds
weak bonds that are attracted to negative poles. help form shapes of molecules
synthesis reaction
two atoms or molecules combine
decomposition reaction
two atoms or molecules split
anabolic
forms something in the body
catabolic
breaks something down in the body
exchange reactions
mix of both synthesis and decomposition reactions where molecules are switched around
longer arrow signifies
more rapid reaction
factors that increase the rate of chemical reactions
temperature, concentration of the particles, smaller particles, catalyst
inorganic compounds
no carbon, smaller
organic compounds
have carbon. larger
vital properties of water
high heat capacity, polarity properties (things dissolve in it), chemically reactive, cushion
reactions that need water
hydrolysis reactions
all salts are
electrolytes
most common salts in body
those containing calcium and phosphorus
are acids organic or inorganic?
inorganic