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Periodic Table of Elements
Chemistry part 2
Terms in this set (23)
Which of daltons statements about the periodic table was later proven false?
Atoms cannot be subdivided.
What is the name of the central region of an atom?
How are atomic number, electron, protons all related?
The atomic number tells you how many protons and electrons are in an atom.
What is it called when an atom looses or gains electrons?
How do isotopes differ?
They have one of more additional neutrons in a neucleus.
What makes up the atomic mass of an atom?
Neutrons and protons
Which sub atomic particles most involved in bonding?
What are the three main types of chemical bonds?
a. Ionic bonds- Gain or loose- form between positive and negative bonds
b.Covalent bonds(share) Atoms share electrons sharing a bond
c. Metallic bond
What are the charactertics of an ionic bond?
a. Rigid solids
b. High melting and boiling points
c.Most formed by elements in groups 16 and 17 bonding with elements from groups 1 and 2
What are the charactertics of a covalent bond?
a. Low melting and boiling points
b. Poor conductors of electricity
What can be said about all the elements in the same group on a periodic table?
Same number of electrons in there valence shell, simliar behaviors when reacting with other elements
Which shell determines how an atom interects/react with another atom?
Where are the most reactive metals found?
The first group or alakli metals
Where are valence electrons located?
Which family or group does not normally form compounds?
What is the maxium number of electrons located?
describe the modern model of the atom?
Moving electrons form an electron cloud
By what subatomic particle is the periodic table organized?
Number of protons
what are elements called that have some properties of metals annd some properties of nonmetals?
Semiconductors or matalloids
Which atoms are unlikely to form a positively charged ion?
Halogens, Noble Gases
Why are the atoms of Group 18 inert?
They have a full valence shell
What kind of bond is formed to make table salt?
(Sodium Chloride)- Ionic bond
Describe an ionic bond
a. Ionic bonds (Gain or lose):Form between positive and negative ions
b. More electrons
c. More protons than electrons (+ charged)
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