Elements
How did Mendeleev arrange the elements in his first periodic table.
Increasing atomic mass
What is the name for the vertical columns on the periodic table?
Groups
What property describes the ability of a substance to transfer heat and electricity?
Conductivity
What did Dalton contribute to the atomic theory
Matter is made of atoms
Positive charged particle
Proton
What can you predict about an element based on its location in the periodic table?
An element's properties
Which group number contains the alkaline earth metals?
Group 2
List three properties of Metals
Who is responsible for the plum pudding model?
Thomson
Negative charged particle
Electron
What does an element's atomic # tell you?
The number of protons in the nucleus
How many metalloids are found on the current periodic table.
7
List three properties of non-metals.
Any 3 of the following: Dull, brittle, low melting point, low density, poor conductors of heat and electricity.
Electrons orbit by energy level. Who am I?
Bohr
Netrual charged particles
Neutron
What is the term for the one or two-letter representation given to each element?
Chemical Symbol
What is another name for the vertical columns found on the periodic table?
Family's
Which metals tend not to be found in the natural environment?
Actenides
Explain the Gold Foil experiment and what it discovered?
Particles did not travel straight through; nuclei were discovered.
A form of a chemical element in which atoms have the same number of protons but a different number of neutrons.
Isotope
Which group of elements does not usually form compounds.
Noble gases
Which group numbers contain the transition metals?
Groups 3-12
List two properties of Lanthanides
Shiny, good conductors of heat and electricity.
Name the 5 major contributors to atomic theory and describe what they discovered.
Dalton- matter is made of atoms
Thomson- electrons
Rutherford- nuclues
Bohr- energy levels
Cloud- Electrons do not orbit but are found in cloud-like formations.
Who coined the term "Atom"
Democritus