Post on 23-Dec-2015
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Which subatomic particle does not have a charge?
neutron
Where are the electrons in an atom?
“orbiting” around the nucleus in an electron cloud
What is another name for an atom that is positively charged?
cation
What type of charge do electrons have?
negative
How many electrons can the firstenergy level hold?
2
Which subatomic particles are in the nucleus of an atom?
Protons and neutrons
Where, on a periodic table, would you find thenonmetallic elements?
On the right side – to the right of the zig-zag line
What does the atomic mass number of an element tell you?
The number of protons plus the number of neutronsin the atoms’ nucleus.
What is the term for the horizontal rows of the Periodic table?
periods
What does the group number of the “A” elementstell you about elements in that group?
The charge
Why is an atom of each element on the periodictable considered to be neutral?
Because it has an equal amount of protons (+) and electrons (-).
Name the 7 elements that are diatomic (they only exist when there are two atoms present)….
Hydrogen, Oxygen, Nitrogen, Chlorine, Iodine, Flourine, and Bromine
What is the charge for elements in Group V?
-3
What is significant about the inert gases in group VIII?
They do not form bonds – they have a full valenceenergy level (with 8)
What is the charge for elements in Group I?
+1
What is another name for the elements in Group I?
The Alkali metals
Which large group of elements have more than one possible charge?
The transition metals
What is the charge for elements in Group VII?
-1
Which element has a symbol of Na?
Sodium
Which element has the symbol Hg?
Mercury
What is the symbol for Tungsten?
W
What is the symbol for the element Tin?
Sn
What is the name of the element with the symbol Cu?
Copper
What is the symbol for the element Iron?
Fe
What is an isotope?
When atoms of the same element have the same numberof protons but a different number of neutrons.
What is a proton?
A subatomic particle with a positive charge located in the nucleus of an atom?
Which type of element is a good conductor (of heat and electricity)?
A metal
Which group of elements do not form any bonds?
The noble gases (or inert gases)
What is the name of the type of elements that havesome characteristics of metals and some of non-metals?
Metalloids (or semi-conductors)
What is a mole?
The base unit that describes the amount of a substance(usually a large amount of small things – like atoms)