Rates of Reaction

AgCl

________ is sensitive to light & breaks down to form metallic silver Ag+-> Ag.

Enzymes

________ function best at optimum temperature and pH level otherwise they may denature and completely stop functioning.

Catalyst

________: is a substance (usually a transition metal) which speeds up a chemical reaction, but remains unchanged at the end.

explosion

A spark from a machine, or a lit match, can cause a(n) ________.

Photosynthesis

________: light provides energy for the reaction and chlorophyll is a dye that absorbs light.

biological catalysts

They are ________ which speed up reactions but remain chemically unchanged at the end.

rate of reaction

Increasing the pressure in a gaseous system increases the ________.

temperature

Increasing ________ increases the rate of reaction.

particle size

Decreasing the ________ (increasing surface area) increases the rate of reaction.

concentration of reactants

Increasing ________ increases rate of reaction.

Particles

________ are moving faster and colliding more ften and so more particles have an energy greater than or equal to the activation energy.

catalyst

A(n) ________ lowers the activation energy for a reaction.

Enzymes

________ are protein molecules.

catalyst

Adding a(n) ________ increases the rate of reaction.

Rate of a chemical reaction

The amount of reactant used up or product made in a given time

Catalyst

is a substance (usually a transition metal) which speeds up a chemical reaction, but remains unchanged at the end

Photochemical Reaction

reaction which needs light to take place

Photosynthesis

light provides energy for the reaction and chlorophyll is a dye that absorbs light

%%Use of silver salts in photography

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