Electrical charges
Another term for outer electrons
What are valence electron?
The amount of energy required to remove an electron from an atom.
What is ionization energy?
He created the periodic table.
Who is Dmitri Mendeleev?
They are shiny, good conductors of both heat and electricity, malleable, and ductile.
What are metals?
It tells you whether the substance is a solid, liquid, or a gas.
What is physical state?
Because the number of valence electrons is so important (as opposed to the inner ones), they are sometimes represented in this illustration
What are Lewis dot diagrams?
The process when an electron that is most likely to leave the atom first is the one that's the farthest out already and it is losing an outer electron.
What is ionize?
A pure substance made up of only one type of atom
What is an element?
Some elements have the properties of metals and nonmetals.
What are metalloids?
This tells you the temperature at which the material melts or boils.
What is melting point?
This is measured as half the distance between the nuclei of two bonded atoms.
What is the atomic radius?
A form of energy that travels through space
What is electromagnetic radiation?
On the periodic table is really just a horizontal row.
What is a period?
They provide a bridge, or transition, between the main group metals and the nonmetals.
What are transition metals?
Is how easily a material dissolves in water or another solvent.
What is solubility?
As you move from left to right on the periodic table, this gains more and more protons.
What is the atomic nucleus ?
The ability an atom has to attract other electrons.
What is electronegativit?
The vertical columns on the periodic table
What are groups or family?
Brittle in their solid form, dull, poor conductors of heat and electricity, and have much lower melting and boiling points than metals, which is why many of them are gases at room temperature.
What are nonmetals?
The temperature that a substance changes from the liquid phase to the gas phase
What is the boiling point?
A tendency to change in a predictable way.
What are trends?
These are higher than UV and X rays
What are gamma rays?
A soft and silvery and react violently with water to form an alkaline (or basic) solution.
What are alkali metals?
An external magnetic field will induce a magnetic field on a substance.
What is paramagnetism?
Features of a substance or object that can be measured or observed without changing the composition of matter
What are physical properties?