Matter
States of matter.
What is gases, liquids and solids.
What is an element?
an element is, a pure substance that CAN NOT BE BROKEN DOWN; into simpler substances.
What aspect of the periodic table can we attribute to Berzelius?
Symbols of elements
Brittle solids with metallic luster
Metalloids
A simple drawing that represents atoms, consisting of the element's chemical symbol surrounded by the atom's valence electrons.
A measure of the amount of matter in an object.
What is mass?
The number of electrons is equal to the number of its protons.
What is a neutral atom?
Boyle's contribution to science was his insistence that science be done through what process?
Experimentation
Possess four to eight valence electrons
Nonmetals
The distance from the center of the nucleus to the electrons in the outermost energy level.
What is atomic radius?
State of matter that has a fixed shape and volume.
What is a solid?
The number of protons in its nucleus
What is Atomic Number?
Demonstrated that combustion requires the presence of oxygen
Lavoisier
Highly conductive and reactive
Metals
Two things that affect the size of an element's atomic radius.
What are the number of energy levels and additional protons?
Consists of atoms with the same atomic number.
What is a pure substance?
Kind of ion formed by the loss of the electron.
What is a cation?
Who first recognized groups of three elements with similar properties?
Johann Döbereiner
How many valence electrons do the alkaline-earth metals have?
Two
Element with the greatest electronegativity.
What is Fluorine?
What is a compound?
The subatomic particle that is most likely to interact with other atoms.
What is an electron?
Led to reorganizing the period table on the basis of atomic number
Henry Moseley
Because Groups 13–16 contain metals, nonmetals, and metalloids, they are known as
Mixed Groups
Element with the largest atomic radius.
What is Francium?