About Us
Campus Staff
Administrators
Organizations
Athletics
Contact Info
During this Unit
This unit focuses on the properties of the elements that are revealed by the arrangement of the Periodic Table. Students relate the placement of an element on the Periodic Table to the element’s classification and bonding behavior. Students develop a conceptual understanding of ionic, covalent, and metallic bonding in this unit.
Misconceptions:
Students may think atoms can be seen with a microscope.
Students may think atoms have electrons orbiting them like planets around the Sun rather than in specific energy levels.
Underdeveloped Concepts:
Students may not understand the role of valence electrons in reactivity.
Key Content Vocabulary:
Anion – a negative ion that has one or more excess electrons
Cation – a positive ion that has lost one or more electrons
Covalent bond – chemical bond in which electrons are shared, equally or unequally, to satisfy the octet rule; molecules and / or atoms held together by covalent bonds
Hydrogen bond – a weak bond that occurs between the slightly positive charged hydrogen atom in a polar molecule and slightly negative charged atom(s) of another polar molecule
Ionic bond – a bond in which electrons are given by one atom to another to satisfy the octet rule
Ions – a negatively or positively charged atom or group of atoms (particle)
Metallic bond – bond in which all the valence electrons of the metal are shared among all the atoms
Octet rule – atoms in a compound give, receive, or share electrons so that each atom has eight electrons in its valence shell
Oxidation number – a number given to an element in a chemical arrangement that represents the number of electrons lost or gained by an atom of that element in the compound; atoms losing electrons are positive; atoms gaining electrons are negative
Related Vocabulary:
Alkali Earth metals
Alkali metals
Atomic mass
Atomic number
Atoms
Chemical behavior
Classification
Compound
Electron
Element
Family
Group
Halogens
Matter
Melting point
Metal
Metalloids
Neutron
Nonmetal
Nucleus
Particle
Period
Periodic Table
Physical behavior
Proton
Reactivity
Valence electron
https://www.teksresourcesystem.net/module/content/search/item/693402/viewdetail.ashx
Editable PowerPoint - Atoms and Periodic Table