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Chemistry in Biology Quiz: Part 2

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What are the noble gases?
group 0; all stable atoms
What is valence?
the number of electrons at the outermost energy level
What is covalent bonding?
sharing of electrons between atoms
Where do covalent bonds usually exist?
between non metals
What kinds of inorganic compounds are there?
acids, bases, and salts
What are the characteristics acids?
sour taste, corrosive in aqueous solutions
What do acids dissociate into?
H+ ions and a metal; usually occur with ionic compounds
What do solutions with low pH have?
a high H+ ion concentration
What is neutralization?
reaction between an acid and a base in forming salts
What happens to litmus paper if the solution is an acid?
it turns from blue to red
What happens to litmus paper if the solution is a base?
it turns from red to blue
What are the characteristics of bases?
taste bitter, feels slippery, in aqueous solutions bases form/dissociate in OH (hydroxide ions)
pH's of bases are?
7.1-14
What are salt like?
taste salty, when placed in water, they usually dissolve easily, highly reactive in water
What are some subatomic particles that are smaller than neutrons than protons?
nucleons and quarks
What equipment is used to discover quarks and nucleons?
particle accelerators
What is the name of the area around the nucleus in which the electrons are found
the orbital
What is a neutral ion?
an atom with a number of electrons equal to the atomic number
What is electrovalence?
something that has given up its electrons and became an ion
Where are negative ions normally found on the periodic table?
the right side
Where are positively charged ion normally found on the periodic table?
the left side
What is the electron number rule?
2-8-8 rule
What creates phase changes in matter?
physical forces
What builds and breaks bonds?
chemical forces
What are chemical forces caused by?
other compounds or molecules that act on substances
Explain more on physical forces?
cannot break down compounds