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Chapter 6, Review 1
Test Description: Review of concepts from chapter 6 - chemistry in biology
Instructions: Answer all questions to get your test result.
1) Substrates bind to an enzyme's active site.
A
True
B
False, passive site
2) Catalysts increase the rate of a reaction by increasing the net energy change of the reaction
A
True
B
False, decreases the activation energy needed to initiate the reaction
3) A chemical reaction is the process where atoms or groups of atoms in substances are reorganized to diff. substances
A
False
B
True
4) Van der Waals forces are attractive forces between molecules
A
False, separating forces
B
True
5) An ionic bond is formed when two atoms share electrons
A
True
B
False, covalent bond
6) All the elements in a period (across one period) on the periodic table have the same number of protons.
A
True
B
False, each has one more than the one before it
7) Elements are pure substances and cannot be broken down into other substance by physical or chemical means
A
False, can be broken down,
B
True
8) When atoms share electrons the form covalent bonds
A
False, ionic bonds
B
True
9) When a mixture changes color or heats up it proves that a physical reaction has happened
A
True
B
False, Chemical reaction
10) Polar molecules are those with an equal distribution of charges
A
True
B
False, unequal distribution of charges
*select an answer for all questions
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