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All the elements in a period (across one period) on the periodic table have the same number of protons.
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
An ionic bond is formed when two atoms share electrons
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
Elements are pure substances and cannot be broken down into other substance by physical or chemical means
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
When atoms share electrons the form covalent bonds
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
Van der Waals forces are attractive forces between molecules
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
Catalysts increase the rate of a reaction by increasing the net energy change of the reaction
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
Polar molecules are those with an equal distribution of charges
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
Substrates bind to an enzyme's active site.
True
False, each has one more than the one before it
False, decreases the activation energy needed to initiate the reaction
True
True
False, covalent bond
True
True
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