Periodic Table Trends

What are alkali metals?

• Group 1 elements that are highly reactive and have one electron in their outer shell.

• Elements that are found in the center of the periodic table and have a full outer shell.

• Non-metal elements that are poor conductors of electricity.

• Transition metals that are used in construction and manufacturing.

Name this group: These metals contain familiar metals such as gold, iron, and copper.

• Alkaline Metals

• Noble Gases

• Transition Metals

• Lanthanides

What are noble gases?

• Elements in Group 18 that are inert and have full valence shells.

• Elements that are highly reactive and have incomplete valence shells.

• Elements that are found in Group 1 of the periodic table.

• Elements that are gases at room temperature and have low boiling points.

What is the difference between metals and nonmetals?

• Metals are typically dull, insulative, and brittle; nonmetals are shiny, conductive, and malleable.

• Metals are typically shiny, conductive, and malleable; nonmetals are dull, insulative, and brittle.

• Metals are usually soft, non-conductive, and flexible; nonmetals are hard, conductive, and rigid.

• Metals are generally transparent, poor conductors, and fragile; nonmetals are opaque, good conductors, and strong.

What is electronegativity?

• A measure of an atom's ability to attract and hold onto electrons.

• The energy required to remove an electron from an atom.

• The tendency of an atom to lose electrons in a chemical reaction.

• A measure of the size of an atom in a molecule.

The vertical (up and down) columns in the Periodic Table are called

• groups

• periods

• blocks

• rows

Elements are organized by REACTIVITY into...

• Periods

• Groups

• Rows

• Columns

What is the Periodic Law?

• The properties of elements are a periodic function of their atomic numbers.

• The atomic mass of elements is the primary factor in determining their properties.

• Elements are arranged in order of increasing density.

• The chemical properties of elements are determined solely by their electron configuration.

What is a chemical symbol?

• A one or two-letter abbreviation for an element.

• A type of chemical reaction.

• A representation of a compound's molecular structure.

• A method for balancing chemical equations.

What is the significance of the atomic number?

• It represents the number of protons in an atom's nucleus.

• It indicates the mass of an atom.

• It determines the chemical reactivity of an element.

• It is the total number of electrons in an atom.