Midterm Ch 1-7 Flashcards
Density =
Mass/volume (divide by)
Mass of protons and neutrons
Mass of electron
Charge of each and location
Roughly the same mass
Electrons are extremely small
Protons are positive, in
Neutrons are neutral, in
Electrons are negative, out
Isotopes
Vary in number of neutrons
Endothermic
Exothermic
Reaction that absorbs energy, reactants low products high
Reaction that gives off energy, reactants high products low
Ionic vs covalent compounds
Electron relationship
Ionic transfer electrons
Covalent compounds share electrons
Ionic compound
Metal + nonmetal
Covalent compound
2 nonmetals or nonmetal and metalloid
Cations are named as
Anions named
Simple element
Ending in “ide”
In water the solid form is ___ dense than ___ form
Less
Liquid
Periodic table
Periods are
Groups/families are
Rows
Columns
All molecules that make up living matter are built from
Non metals
Atomic radii
To left and down
Ionization energy
Up from bottom left corner of table and to the right = increases
Ionization energy
Minimum energy needed to remove electrons
Ion
Atom or group that has a positive or negative charge from losing or gaining electrons
Cation vs anion
Cation is positive ion
Anion is negative ion
Maximum number of electrons in Lewis dot structure
8
Valence electrons represented in this structure
Valence electrons
Electrons that participate in chemical reactions
Redox reaction
Nonpolar compounds tend to be a
Polar molecules have ____ elements
Single element (O2)
Multiple, CO2
Group number represents alkali metals, alkali earth metals, halogens and Nobel gases
Alkali= group 1
Alkali earth= group 2
Halogens (diatomic) = group 7
Nobel gases = group 8
Noble gases melting and boiling points are
Very close to each other
Gases are easily _____ because there is a lot of space between the ____
Compressed
Atoms
Charles gas law
V1/t1=v2/t2
Volume of gas is directly proportional to temperature
