The Periodic Table
The elements with a stable electron configuration. Give the name and Group Number
What are the Noble Gases, Group 18?
Ions formed by doing this
What is by gaining or losing electrons?
Explain shape and volume for the 3 states of matter
What is
Solid have a definite shape and volume
Liquids have definite volume, but not definite shape
Gases have no definite shape or volume??
Subatomic particles found in the nucleus of an atom.
What are protons, neutrons and electrons?
3 subatomic particles; mass and charge.
What are Protons- positive and 1 amu, Neutrons - neutral and 1 amu, Electrons - negative and 1/1836 amu (very little mass)?
The number of protons in an element.
What is the atomic number?
A sodium ion, Na+, has _____ _____ electron.
What is lost one?
The average kinetic energy of a substance.
What is temperature?
Number of neutrons in C-14.
What is 8?
The equation for density
What is Density = Mass/Volume (Mass over volume)?
List the 7 metalloids...
What are B, Si, As, Te, Ge, Sb, Po
Neutral atoms have equal numbers of _________
What are protons and electrons?
The phase change from solid to liquid, and liquid to solid.
What are melting and freezing?
What early model of the atom did Thomson develop that involved electrons surrounded by a volume of positive charge.
What is the Plum-Pudding Model?
The formula unit for dichromate.
What is Cr2O72- ? (use Table E)
List 3 properties of metals.
What are conducts of heat, conductors of electricity, ductile, malleable, luster, shiny?
Elements in Group 17 tend to ______ electrons when they form ions.
What is gain?
The force exerted by gas molecules colliding with the surfaces of objects
What is pressure?
Valence electron
What is the electrons found in the outermost occupied energy level of an atom?
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Mass number
Atomic radius, as one moves from left to right across the periodic table.
What is atomic radius decreases?
Elements in Group 3 form ions with a charge of ___
What is + 3?
The relationship between volume and pressure, for a gas held at constant temperature.
What is an indirect relationship, as volume increases, pressure will decrease? (and vice versa)
Elements with the same number of protons but different number of neutrons.
What are isotopes?
Particle diagrams for carbon dioxide in the solid and gas state.
What is ....
The trend for ionization energy.
What is increases across a period, decreases down a group?
Ca or Ca+2, larger radius.
What is Ca?
Compare endothermic and exothermic changes
What is exothermic changes release energy, while endothermic changes absorb energy?
In an atom, the region of likely finding an electron.
What is an orbital?
Type of bond in BaCl2
What is ionic?
Define electronegativity
What is how well an atom's nucleus can pull on electron from a different atom when forming a bond.
Lewis Dot structure of Chlorine and Chloride ion.
What is ...
Two behaviors of ideal gases based on Kinetic Molecular Theory.
What is 1. move in a constant, random straight line motion, 2. have elastic collisions, 3. the volume of gas particles is negligible compared to the total volume?
Energy and location of an electron as it falls from the excited to the ground state.
What is releases energy as light as the electron moves to a lower energy level?
5 important compounds
What are H2O, CH4, NaCl, CO2, NH3?