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6.1 And 6.2 Review
Test Description: Review for Chapter 6 sections 1 and 2
Instructions: Answer all questions to get your test result.
1) An atom of fluorine has nine electrons. Its second energy level has _________ electrons.
A
seven
B
eight
C
nine
D
two
2) Which is the negatively charged particle located outside the nucleus of an atom?
A
neutron
B
proton
C
silicon
D
electron
3) Which particle in the nucleus of an atom has a neutral charge?
A
carbon
B
electron
C
neutron
D
proton
4) If an atom has 7 electrons, how many are located in the second energy level?
A
2
B
7
C
5
D
3
5) In the periodic table of the elements, elements in Group 1 have how many outer electrons?
A
8
B
0
C
4
D
1
6) One isotope of carbon differs from another in which way?
A
number of neutrons
B
number of protons
C
number of electrons
D
atomic number
7) Which is the best description of activation energy?
A
Heat added to initiate a reaction.
B
Heat stored within the product molecules.
C
Heat released as the reaction proceeds.
D
Heat stored within the reactant molecules.
8) Which cannot take place during a chemical reaction?
A
formation of new molecules
B
bonds forming between atoms
C
formation of new atoms
D
bonds breaking between atoms
9) What principle can be applied to all chemical reactions?
A
energy loss theory
B
reactants formed from product
C
conservation of mass
D
coefficient principle
10) How many different kinds of atoms does an element contain?
A
six
B
four
C
two
D
one
*select an answer for all questions
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