THe ATom
the tie that binds
water, water
acid or base
this and that
100
protons and neutrons
What particles are found in the nucleus
100
ion
What is an element that has gained or lost electrons called?
100
its polarity
What makes water an excellent solvent?
100
pH 7
What pH would you expect in a solution that is neither acidic or basic?
100
Mendeleev
Who is the scientist given credit for the development of the periodic table?
200
The particle that characterizes an element
What is a proton
200
ionic bond
What is the name of the bond type by which ions are joined in a compound?
200
ionic and polar covalent
What kinds of solutes can dissolve in water?
200
it becomes more acidic
What happens the the concentration of H ions as the pH goes from 6 to 1?
200
11
What is the number of protons in an element with an atomic number of 11 and a mass number of 23?
300
the particles that determine an element's activity
the outermost electrons
300
high specific heat
What characteristic of water causes land near large bodies of water to have a more temperate climate?
300
reflects the concentration of H ions
What does the pH scale do?
300
quantum model
What is the name of the atomic model that is accepted as the most correct today?
400
the octet rule
what rule tells us how many outer electrons are required for an atom to be in its most stable state
400
share one or more pairs of electrons
What is a covalent bond?
400
cohesion
What is the name of the force that causes water molecules to pull each other along (caused by hydrogen bonding)?
400
7.35 to 7.45
What is normal pH in a human being?
400
because of its high specific heat, it acts as an efficient cooling mechanism for humans
What is the benefit of sweating?
500
inert gases
What are the elements called that already have 8 outer electrons
500
hydrogen bonds
What is the attraction between water molecules called?
500
solid water has a lower density than liquid water
What characteristic of water makes it beneficial for organisms that live in ponds?
500
it would release H ions to lower the pH
What would a buffer do to bring a basic pH back to its normal level in the blood?
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