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MAY101B
Periodic table, atoms,pH 6th and 8th grade
29
Science
8th Grade
11/07/2011

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Cards

Term
Where are metals and nonmetals located on the periodic table? What about metalloids?
Definition
Metals are on the left, nonmetals are on the right
Metalloids are in the "stairway" in the middle that goes down and to the right
Term
What properties belong to metals?
Definition
Metals are usually shiny solids that are good conductors
Term
What are properties of nonmetals?
Definition
Nonmetals are gases or brittle solids. They are not good conductors
Term
What are properties of metalloids?
Definition
They can have properties of both metals and nonmetals. They are semiconductors usually. (they "kind of" conduct some heat or electricity)
Term
Where are protons located and what is their charge?
Definition
In the nucleus --- positive
Term
Where are neutrons located and what is their charge?
Definition
In the nucleus and neutral
Term
Where are electrons located and what is their charge?
Definition
Outside the nucleus in the little " rooms" or orbitals They are negative
Term
What are the rules for the "atom hotel" also known as the Bohr Model?
Definition
2 rooms on the first floor
8 on the next 2 floors
Fill each floor before moving to the next
Term
What is the atomic mass?
Definition
The protons plus neutrons
Term
What is the atomic number
Definition
protons
Term
What is the MOST CURRENT atomic model
Definition
electron cloud
Term
What is an isotope
Definition
an atom with a different number of neutrons
Term
What is an ion
Definition
An atom with a different number of electrons
Term
Which "particle" determines the identity of an atom? (if this changes, then the atom no longer is the same type of atom)
Definition
Protons - they always determine WHICH element the atom is ...
Term
Where are acids and bases on the pH scale?
Definition
Acids 0-6
Neutral 7
Bases 8-14
Term
Common acids
Definition
vinegar, lemon juice, citric acid, fountain or canned soda
Term
Common Bases
Definition
Bleach
baking soda
soap
Term
which is more dangerous, acids or bases
Definition
both are equally dangerous, depending on how low or how high the pH is
Term
H+ is found in ....
Definition
acids
Term
OH- is found in
Definition
bases
Term
Where are gases found on the periodic table ?
Definition
right side
Term
Where are the alkali metals found?
Definition
left most column
Term
Where are the alkaline earth metals
Definition
2nd family from the left
Term
Where are the halogens found?
Definition
2nd family from the right beside the noble gases
Term
where are the noble gases found ?
Definition
they are the family that is most to the right
Term
What is similar about families on the periodic table?
Definition
They tend to react the same in reactions

They have the same valence electrons
Term
What are valence electrons
Definition
They are in the outer orbital of an atom
Term
What is important about valence electrons
Definition
Atoms with the same number of valence electrons tend to react similarly in chemical reactions (FAMILIES)
Term
What is key about noble gases?
Definition
They do not like to combine with other atoms

They have a full set of valence electrons
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