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17 questions
Increasing the ____ causes the particles (atoms
or molecules) of the reactants to move more quickly so that
they collide with each other more frequently and with more
energy.
Catalyst
Surface Area
Temperature
Concentration
________ is the measure of how much area of an
object is exposed.
Surface Area
Catalyst
Temperature
Concentration
Pick the TWO (2) options that will INCREASE the rate of a reaction.
Reducing Heat
Adding Catalyst
Adding Heat
Removing Catalyst
Which of the following will lower the rate
of reaction?
adding an enzyme to the reaction
decreasing the temperature from 40°C to
10°C
breaking a chunk of calcium up into
smaller pieces
increasing the amount of solute
dissolved in a solution
An enzyme's role is to...
speed up biological chemical reactions.
balance chemical reactions.
reorganize groups of atoms into different substances.
tell the cell when to start making more energy.
Water in a lake freezing is an example of a chemical change.
True
False
Which of the following would be considered a physical change?
Cutting paper
pH test
Burning marshmellow
Roasting a Turkey
What conditions are required for rusting?
water only
oxygen only
water and oxygen
What is oxidation?
A reaction involving oxygen
A reaction involving non-metals
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