Chapter 3 test cards Flashcards
(44 cards)
What is the group number for the Carbon family?
14
What is the group number for the Nitrogen family?
15
What is the group number for the Oxygen family?
16
What is the group number for the Halogen family?
17
What is the group number for the Noble gases?
18
Name a nonmetal in the Carbon family.
Carbon
Name a nonmetal in the Nitrogen family.
Nitrogen
Name a nonmetal in the Oxygen family.
Oxygen
Name a nonmetal in the Halogen family.
Chlorine
Name a nonmetal in the Noble gas family.
Neon
How can the properties of an element be predicted?
Its location on the periodic table
What are the four things in an element square on the periodic table?
Atomic number, chemical symbol, name, and atomic mass.
What are the physical properties of metals?
Shininess, Malleability, Ductility, and Conductivity.
How does the reactivity of metals change?
Left to right across the periodic table.
What is the most useful property of the metalloid?
The varying ability to conduct electricity.
What is Thomson’s model?
An atom as a ball of positive charge with electrons embedded in it.
Who discovered the nucleus?
Ernest Rutherford
What is a nucleus?
The tiny, positively charged center of an atom.
What has a mass about equal to one amu?
A proton or a neutron.
When did Dmitri Mendeleev notice the pattern of properties?
When he arranged the elements in order of increasing atomic mass.
Who published the first periodic table?
Mendeleev
What happened after protons were discovered?
Elements were rearranged according to atomic number.
What can you do with a ductile material?
It can be pulled out, or drawn, into a long wire.
What group are alkali metals in?
Group 1
