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Biology Chapter 4
Test Description: More detailed review of chapter 4: Chemical Basis for Life
Instructions: Answer all questions to get your test result.
1) Anything that occupies space and has mass is --
A
a compound
B
an element
C
an atom
D
matter
2) A pure substance that can't be chemically broken down any further is --
A
a compound
B
an element
C
an atom
D
matter
3) A substance with a fixed ratio made of multiple elements chemically bound is --
A
an atom
B
an element
C
a compound
D
matter
4) The smallest possible particle in an element is --
A
an element
B
a compound
C
matter
D
an atom
5) The atomic number is the number of
A
protons
B
nuclei
C
electrons
D
neutrons
6) Which of the below is false about isotopes?
A
They have a regular number of neutrons
B
Radioactive isotopes' nuclei break down
C
Radioactive isotopes can emit radiation
D
They have a regular number of protons
7) An ionic bond _____ electrons in atoms
A
shares
B
transports
C
compares
D
transfers
8) Covalently bonded atoms --
A
all of the above
B
transfer electrons
C
create ions
D
have as many bonds as needed electrons
9) Molecules cannot be represented by a --
A
chemical formula
B
space-filling model
C
chemical reaction
D
structural formula
10) A chemical reaction --
A
only rearranges atoms
B
forms new bonds by releasing energy
C
absorbs energy to break bonds
D
all of the above
*select an answer for all questions
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