Mod 7 Lesson 1 Flashcards
What is the atomic number?
The number of protons in the nucleus of an atom; (Z)
What are chemical properties?
Characteristics of matter observed during chemical reactions.
Who is Dimitri Mendeleev?
The Russian scientist who contributed to the creation of the periodic table of elements.
Mendeleev classified his periodic table by similar properties and by increasing atomic weight.
Who is Lothar Meyer?
The German scientist who contributed to the creation of the periodic table of elements.
Meyer classified his periodic table by similar properties and by increasing atomic weight.
Who is Henry Moseley?
The American scientist who rearranged the periodic table in 1913 to increasing atomic number instead of increasing atomic weight.
What are physical properties?
Characteristics of matter, such as color, luster, and hardness, that are observed without changing its chemical nature.
