Biology Chapter 4 Question Preview (ID: 3131)
More Detailed Review Of Chapter 4: Chemical Basis For Life.
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Anything that occupies space and has mass is --
a) matter
b) an element
c) a compound
d) an atom
A pure substance that can't be chemically broken down any further is --
a) matter
b) an element
c) a compound
d) an atom
A substance with a fixed ratio made of multiple elements chemically bound is --
a) matter
b) an element
c) a compound
d) an atom
The smallest possible particle in an element is --
a) matter
b) an element
c) an atom
d) a compound
The atomic number is the number of
a) electrons
b) protons
c) neutrons
d) nuclei
Which of the below is false about isotopes?
a) They have a regular number of neutrons
b) Radioactive isotopes can emit radiation
c) Radioactive isotopes' nuclei break down
d) They have a regular number of protons
An ionic bond _____ electrons in atoms
a) shares
b) transfers
c) transports
d) compares
Covalently bonded atoms --
a) create ions
b) have as many bonds as needed electrons
c) transfer electrons
d) all of the above
Molecules cannot be represented by a --
a) chemical formula
b) structural formula
c) space-filling model
d) chemical reaction
A chemical reaction --
a) absorbs energy to break bonds
b) forms new bonds by releasing energy
c) only rearranges atoms
d) all of the above
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