Properties of Metals and NonMetals
An element that lacks most properties of a metal.
What is a Non Metal.
A process by which unstable isotopes release fast moving particles and energy from the atomic nuclei.
What is Radioactive Decay.
The electrons which have the highest energy and are the most loosely held.
What are valence electrons.
An atom or group of atoms that has an electronic charge.
What is an ion.
A combination of symbols that shows the ratio of elements in a compound.
What is a chemical formula.
A molecule that consists of two atoms.
What is a diatomic molecule.
The name that Marie Curie gave to the spontaneous emission of radiation from an unstable atomic nucleus.
What is radioactivity.
A diagram which depicts the amount of valence electrons for each element.
What is an electron/Lewis dot diagram.
An atom that loses an electron.
What is a positive ion.
What is a subscript.
A nonmetal who's name means "salt forming".
What are Halogens.
Radioactive isotopes that can be followed through the steps of a chemical reaction or industrial process.
What is a tracer.
The force of attraction that holds two atoms together as a result of a rearrangement of electrons between them.
What is a chemical bond.
What is a cation
The orderly, three-dimensional arrangement of ions.
What is a crystal.
The smallest known element.
What is Hydrogen.
Radiation which accompanies alpha and beta particle decay.
What is Gamma Radiation.
In general, the reactivity of metals decreases from ? to ? on the periodic table.
What is Left to Right
What is a polyatomic ion.
Ionic compounds have a _____ melting point than covalent compounds.
What is higher.
A substance that can conduct electricity under some conditions but not other conditions.
What is a semiconductor.
This particle consists of two protons and two neutrons and is released during radioactive decay.
What is an Alpha Particle.
The rule that states that all elements are attempting to have 8 valence electrons.
What is the Octet Rule.
The bond between two oppositely charged ions.
What is an ionic bond
Which ion is shown first in an ionic compound, the cation or anion?