Florida Science Grade 6

Chapter 16: Atoms, Elements, and the Periodic Table

Standardized Test Practice

1.
Which scientist believed the universe was made of empty space and tiny, undividable bits of stuff? SCH.H.1.3.6
A)Aristotle
B)Arrhenius
C)Democritus
D)Chadwick
2.
Based on the figure above, what does the number 83.80 tell about each krypton atom?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007869387x/161383/635_97_q2_q3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (16.0K)</a>

SC.A.2.3.2
A)average number of neutrons in the isotopes of an element
B)number of neutrons in one isotope of an element
C)weighted average mass of the isotopes of an element
D)number of neutrons and protons in one isotope of an element
3.
According to the periodic table block in the figure, how many electrons does an uncharged krypton atom have?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007869387x/161383/635_97_q2_q3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (16.0K)</a>

SC.A.2.3.2
A)48
B)72
C)36
D)96
4.
What is the same for two atoms of the same element that are isotopes? SC.A.2.3.2
A)number of protons
B)atomic mass
C)mass number
D)number of neutrons
5.
The illustration shows an experiment performed by which scientist?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/007869387x/161383/635_99_q5_q6.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (13.0K)</a>

SC.H.1.3.2
A)Crookes
B)Dalton
C)Thomson
D)Rutherford
6.
In the figure, what did the particles that deflected from the gold foil show?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/007869387x/161383/635_99_q5_q6.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (13.0K)</a>

SC.A.2.3.1
A)Charge is spread through an atom.
B)An atom has a positively-charged center.
C)Most of an atom is empty space.
D)The atoms were centered in one spot.
7.
What part or partsof an atom accounts for most of its mass? SC.A.2.3.2
A)electrons and neutrons
B)electrons only
C)protons and neutrons
D)protons only
8.
What is the mass number of an atom that has 2 protons and 3 neutrons? SC.A.2.3.2
A)2
B)5
C)3
D)4
9.
How can most of the elements on the periodic table be classified? SC.A.2.3.2
A)lanthanides
B)metalloids
C)metals
D)nonmetals
10.
What term describes atoms and molecules that come together without bonding? SC.A.2.3.2
A)mixture
B)compound
C)element
D)substance
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.