lecture exam 2 Bio

Matter
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Terms in this set (34)
Matter
Chemistry is the scientific study of...
element
The fundamental substance of matter is the...
oxygen
carbon
hydrogen
nitrogen
(all of these)
96.0% of your body by weight is...
protons and neutrons
Which of the following are found in the nucleus of an atom?
the seventh one
If an atom has seven shells or orbitals, which is the valence shell?
A full valence shell
Electroneutra
For an atom to be "happy", as we discussed in class, it requires which of these
cation
proton
Which of the following have a positive charge? (Select all that apply)
anion
electron
Which of the following have a negative charge? (Select all that apply)
neutron
Which of the following have no charge?
inorganic acid
A substance that releases H+ in detectible amounts is a (an)...
electrolytesSubstances that dissociate in water to release cations and anions (except H+ and OH-) and thus conduct electricity in solution are...ionThe general name for any atom that has gained or lost one or more electrons is...2The first shell or orbital of an atom can have a maximum of how many electrons?8The second shell or orbital of an atom can have a maximum of how many electrons?atomic numberOn the Periodic Table, for the element Carbon, what is the term for the number 6 at the top?atomic massOn the Periodic Table, for the element Carbon, what is the name for the number 12.0112 at the bottom?atomic symbolOn the Periodic Table, for the element Carbon, what is the term for the "C" in the middle?valence electronsOn the periodic table, all of the elements in the same column have the same number of...shellsOn the periodic table, all of the elements in the same row have the same number of...biochemistyThe scientific study of chemistry that occurs in living things is called...have a full valence shell are inert therefore will not react with other atoms are electroneutral will not form bonds with other atomsWhat is unique about the elements in the column at the far right of the periodic table? (Select all that apply)moleculesTwo or more atoms held together by chemical bonds are...mixturesTwo or more substances physically intermixed together are...covalent bondsBonds between atoms where electrons are shared are called...ionic bondsBonds between cations and anions are called...hydrogen bondsBonds between water molecules are called...empirical formulaC6H12O6 is an example of ...inorganic baseA substance that absorbs H+ or releases OH- in detectible amounts is a (an)...0-6Which of the following pH readings are considered to be acidic?8-14Which of the following pH readings are considered to be basic?7Which of the following pH readings are considered to be neutral?bufferAny substance that prevents a drastic pH shift by converting a "stronger" acid or base into a "weaker" acid or base is a...the number of protons in the nucleus the number of electrons in the orbitalsOn the Periodic Table, for the element Carbon, what information does the number 6 at the top indicate?the average number of protons in the nucleus of like atomsOn the Periodic Table, for the element Carbon, the number 12.0112 at the bottom indicates the sum of which of the following numbers?