Show:
Atomic Number
Electron Configuration
Scientists
Periodic Table
Terms & Definitions
100
Hydrogen
What is 1
100
B
What is 1s^2 2s^2 2p^1
100
What was the evidence that J.J. Thomson found?
What is evidence for the existence of negatively charged particles that could be removed from atoms.
100
What is the chemical symbol of Boron?
What is B
100
What is a Metalloid?
What is an element that possesses both metal & non-metal characteristics.
200
Potassium
What is 19
200
Al
What is 1s^2 2s^2 2p^6 3s^2 3p^1
200
What was Millikan's experiment called?
What is the oil-drop experiment.
200
What is the chemical symbol of Krypton?
What is Kr
200
What is an atom?
What is the smallest part of a chemical element that retains the property of an element.
300
Seaborium
What is 106
300
Cu
What is 1s^2 2s^2 2p^6 3s^2 3p^1
300
What scientist called the center part the nucleus & used the term proton to name the smallest unit of positive charge in the nucleus?
Who is Rutherford.
300
What is the chemical symbol of Hassium?
What is Hs
300
What are covalent bonds?
What is a chemical bond formed by the sharing of a single pair, two pairs, or three pairs of electrons between the two atoms.
400
Phosphorus
What is 15
400
Ar
What is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^10
400
What are three of John Dalton's hypotheses?
What is 1) atoms of different elements have a different set of properties. 2) matter consists of small particles called atoms. & 3) atoms of one particular element are identical & the properties are identical.
400
What is the chemical name of U?
What is Uranium
400
What are binary compounds?
What is a compound formed from the combining of two different elements. Ex. NaCl
500
Bismuth
What is 83
500
Ir
What is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^7
500
What is Mendeleev best known for?
What is he is best known for his work on the periodic talbe; arranging the 63 known elements into a periodic table based on atomic mass.
500
What is the chemical name of Fm?
What is Fermium
500
What are valence electrons?
What is electrons in the outermost energy level of an atom. There are the electrons involved in chemical reactions.