NSES Content Standard B
Physical Science: Chemical reactions
Grades 9-12, page 179
Catalysts, such as metal surfaces, accelerate chemical reactions. Chemical
reactions in living systems are catalyzed by protein molecules called enzymes.
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Benchmark 4D The Physical Setting: Structure
of Matter
Grades 9-12, page 80
The rate of reactions among atoms and molecules depends on how often
they encounter one another, which is affected by the concentration, pressure,
and temperature of the reacting materials. Some atoms and molecules are
highly effective in encouraging the interaction of others.