heat of combustion, reacting with water, and pH are examples of this
What are chemical properties?
100
holds protons and neutrons
What is the nucleus?
100
created the first periodic table
Who is Mendeleev?
100
Phosphorus, Sulfur, and Chlorine
What are non-metals?
100
F
What is Fluorine?
200
measurable with out changes in its physical state.
What is a physical property?
200
has a negative charge and is outside the nucleus
What is an electron?
200
created the theory of relativity and is the father of modern physics
Who is Einstein?
200
Sodium, Magnesium, Aluminum
What are metals?
200
Co
What is Cobalt?
300
pH greater then 7
What is basic?
300
tells us number of protons in the nucleus
What is atomic number?
300
described an atom as "plum pudding" a sphere with positive matter and electrons inside it. the electron being the plums and the positive matter the pudding
Who is JJ Thomson?
300
Boron, Silicon, Arsenic
What are metalloids?
300
Ag
What is silver?
400
pH less then 7
What is acidic?
400
binds electrons to the nucleus by this force
What is electromagnetic force?
400
declared elements are made of atoms, atoms cant be destroyed, and in chemical reactions atoms are combined
Who is Dalton?
400
elements in the center of the periodic table
What are transition metals?
400
Pt
What is Platinum?
500
solid, liquid, and gas
What are states of matter?
500
either a proton or a neutron in the nucleus of an atom
What is a nucleon?
500
helped us understand nuclear fission
Who is Chadwick?
500
elements in the second group on the periodic table