Who's the man
He thought all substances were built from only four elements, earth air, fire, and water
Aritstotle
Groups or families go in this direction on the periodic table
vertically up and down
This russian chemist organized the periodic table into rows and columns
Dmitri Mendeleev
name all the subatomic particles in an atom
protons
electrons
neutrons
how many colors can a pumpkin come in
7 colors , orange red, pink, green, tan, white, blue
He said that all matter is made of individual particles called atoms. His "atomic balls" (solid wooden spheres) represent the model for the atom
The elements in the nitrogen family (group 5) have this many valence electrons
5
How do we arrange the modern periodic table
by increasing atomic number
this tells you the number of protons in an atom
the atomic number
He showed evidence that atoms are made of subatomic particles.
He has the chocolate chip ice cream model
J J Thomson
Why are elements arranged in the same group / family?
They have similar properties and reactivity
These are the three ways elements are classified on the periodic table
metals, nonmetals, and mettaloids
the sum of the protons and neutrons
equals the atomic mass
how fast can steven clark (fastest pumpkin carver in the world) carve a pumpkin
His gold foil experiment allowed us to discover the nucleus of the atom
Ernest Rutherford
This "highly regarded" group of elements are non reactive
What happens to the size of the atoms as you travel down the periodic table
the atoms get larger
Potassium has an atomic number of 19 and an atomic mass of 39.098. It would have this many protons, electrons, and neutrons.
19, 19, 20
Halloween candy sales average about how much annually in the United States
2 billion dollars
His model of the atom is the currently accepted model with the electron cloud surrounding the nucleus showing that electrons can gain and lose energy
Erwin Schrodinger
These TWO groups are the most reactive
groups 1 & 7
the alkali metals and the halogens
A square on the periodic table lists these four pieces of information.
Use the information below as an example:
17
Cl
Chlorine
35.453
Atomic number
Atomic symbol
name
atomic mass
oxygen 16 and oxygen 17 are examples of this
isotopes
atoms of the same element with a different number of neutrons and a different atomic mass
What percent of parents admit to sneaking goodies from their kids' Halloween trick-or-treat bags?
90 %