Atomic Theory
Said the world consists of 4 elements: Earth, Fire Water and Air
Who is Aristotle
Something that is observed without changing the substance
What is a Physical Properity?
The one or two letters used to denote an Element
What is the Chemical Symbol
Family of completely unreactive Elements
What are the Nobel Gases
Substance made up only one type of atoms
What is an Element
When a Liquid becoumes a gas
What is Vaporization
The subatomic particle that carries no charge
What is the Neutron
In 1905, he published tge Theory of Relativity
Who is Albert Einstine
Does NOT form a new substance
What is a Physical Change
A Column on the Periodic Table
What is a Group
Only member of Group 1 that is not an Alkali Metal
What is Hydrogen
Substance made up of two or more different chemical substances which are not chemically combined
What is a mixture
The degree to which a substance can damage an organism
What is Toxicity
The subatomic particle with a positive charge
What is a Proton
In the late 1800's, this pair of scientists discovered that radioactive elements lose their electrons over time
Who are Marie and Pierre Curie
The States of Matter
What are Gas, Liquid, Solid and Plasma
A Row on the Periodic Table
What is a Period
Who believed that electrons are responsible for ALL of an Element's characteristics
Who was Niels Borh
True or False: Carbon, Hydrogen and Oxygen are the most abundant elements in the human body
True: Oxygen makes up about 65% of body mass, followed by Carbon at 18% and Hydrogen 10%
Has no defined shape but does have a defined volume
What is a Liquid
Subatomic particle that is about 2000 times smaller than a Proton
What is an Electron
In the Middle Ages, These people believed they could turn other substances into gold
Who were Alchemists
The amount of Matter in a given Voume
What is Density?
The number of valence electrons needed for an elemnet to be stable
What are 2, (for He) or 8
This group is VERY reactive with the non-metals
What is Oxygen or Oxygen Family
States the amount of Matter stays the same, even when the Matter changes form: The atoms of the reactants must equal the atoms of the products
What is the Law of Conservation of Matter (Mass)
Three piece of evidence for a chemical change
What are Smoke/Fire, Color change, Temperature change, bubbles/fizz, new solid made
The number of protons an Element has
What is the Atomic Number
In 1789, He created the first Periodic Table of Elements
Who was Demetri Mendeleev
The formula for Density
d=m/v or Density=mass/volume
The largest family of elements in the Periodic Table
What are the Transistion Metals
Mealloid in the Carbon Family
What is Silicon or Germanium
The formula and chemical name for table salt
What is NaCl, Sodium Chloride
The ablity for one substance to dissolve in another
What is Solubility?
The value that is equal to the number of Protons + the number of Neutrons
What is the Atomic Mass
In 1913, he created the Periodic Table of Elements we use today
Who is Henry Mosely
Name 3 physical properties of matter
Density, Ductility,Malleability, Solubility, Boiling point, Melting point, Electrical Conductivity
This family contains only highly conductive and radioactive metals
What is the Lanthanaide and/or Actinide Series
The most reactive Element in the Periodic Table
What is Fluorine
The starting materials in a chemical reaction are called:
The materal that is generated is called:
What are the Reactants and Products
When a solid goes strtaight to the gas state
What is Sublimation
The number of Protrons, Neutrons and Electrons in a Lithium atom
What are 3 Prontons, 4 Neutrons and 3 Electrons