The Periodic Table
Name of the elements in Group 18.
What are the Noble Gases?
Ions formed by doing this
What is by gaining or losing electrons?
The 3 states of matter
What are solid, liquid, gas?
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 negatively charged ion.
What is an anion?
Has no definite shape, yet has a definite volume.
Liquids
Number of neutrons in C-14.
What is 8?
The equation for density
What is Density = Mass/Volume (Mass over volume)?
Number of periods on the periodic table
What is 7?
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?
a valence electron.
What is an electron in the outermost energy level of an atom?
Number of energy levels for Elements found in the 3rd period.
What is 3?
A sodium ion, Na+, has _____ _____ electron.
What is lost one?
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 17 tend to ______ electrons when they form ions.
What is gain?
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?
oxygen forms an oxide. (oxygen ion)
What is gains two electrons?
List 3 properties of metals.
What are conducts of heat, conductors of electricity ductile, malleable, luster, shiny?
Ca or Ca+2, larger radius.
What is Ca?
The average kinetic energy of a substance.
What is temperature?
In an atom, the region of likely finding an electron.
What is an orbital?
Define matter.
What is matter has mass and volume (takes up space)?
Define Periodic Law
What is the arrangement of elements on the Periodic Table in order of increasing atomic number, so that elements exhibit a repeating pattern in their chemical and physical properties.
Elements in Group 3 form ions with a charge of ___
What is + 3?
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?