Stoichiometry
What is the mole ratio indicated by?
Coefficients
Nuclear reactions involve changes in the composition of ________.
nuclei
Which part of the electromagnetic spectrum can humans see?
visible light
An atom with ____ electrons in its outer energy level is most stable.
(except H and He)
8
In a Lewis dot structure, the dots represent _________________.
valence electrons
Which reactant is completely used up in a chemical reaction?
What is the identity of an alpha particle?
helium nucleus
Electromagnetic radiation is a form of _________ that exhibits wavelike behavior as it travels.
energy
The amount of energy required to remove an electron from an atom is called ____________________.
ionization energy
What type of bond results when nonmetal atoms share valence electrons?
covalent bond
For the following reaction, how many moles of hydrogen are required to produce 10.0 moles of methane (CH4)?
C + 2 H2 --> CH4
20 mol
What is the nuclear symbol of a beta particle?
0/-1 e
Which element is represented by the following electron configuration?
[Rn]7s1
Francium
An atom's ability to attract and bind to electrons is called ___________________.
electronegativity
Would a solid substance with a high melting point that dissolves easily in water most likely be an ionic compound or a covalent compound?
Calculate percent yield if the theoretical yield is 75.0 g and the actual yield is 62.5 g.
83.3 %
Which type of nuclear reaction results in two nuclei combining to form a single, larger nucleus?
nuclear fusion
What is the longhand electron configuration for rubidium (Rb)?
1s22s22p63s23p64s23d104p65s1
Which element on the periodic table has the highest electronegativity?
Fluorine (F)
In a bond between carbon and fluorine, would electrons be exchanged or shared?
shared
A certain amount of glucose (C6H12O6) burned in oxygen and produced 22 grams of carbon dioxide (CO2). How many grams of water were produced at the same time?
C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O
9.0 g
The half-life of radium-222 is 1,600 years. If you start with 1,600 atoms of radium-222, how many would remain after 6,400 years?
100 atoms
What is the speed of light?
3.00 x 108 m/s
Which element has the largest atomic radius?
(according to the general trend for atomic radius)
Francium (Fr)
If two covalently bonded atoms have electrons that are shared unequally, is the bond polar or nonpolar?
polar