6.1 And 6.2 Review Question Preview (ID: 11165)
Review For Chapter 6 Sections 1 And 2.
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An atom of fluorine has nine electrons. Its second energy level has _________ electrons.
a) two
b) eight
c) seven
d) nine
Which is the negatively charged particle located outside the nucleus of an atom?
a) electron
b) neutron
c) silicon
d) proton
Which particle in the nucleus of an atom has a neutral charge?
a) carbon
b) electron
c) neutron
d) proton
If an atom has 7 electrons, how many are located in the second energy level?
a) 2
b) 3
c) 5
d) 7
In the periodic table of the elements, elements in Group 1 have how many outer electrons?
a) 0
b) 1
c) 4
d) 8
One isotope of carbon differs from another in which way?
a) atomic number
b) number of electrons
c) number of neutrons
d) number of protons
Which is the best description of activation energy?
a) Heat added to initiate a reaction.
b) Heat released as the reaction proceeds.
c) Heat stored within the reactant molecules.
d) Heat stored within the product molecules.
Which cannot take place during a chemical reaction?
a) formation of new atoms
b) bonds breaking between atoms
c) formation of new molecules
d) bonds forming between atoms
What principle can be applied to all chemical reactions?
a) conservation of mass
b) reactants formed from product
c) energy loss theory
d) coefficient principle
How many different kinds of atoms does an element contain?
a) six
b) one
c) four
d) two
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