Unit 5 PS Vocab

A horizontal row of elements in the periodic table is called a:

• Group

• Period

• Transition metal

• Family

A vertical column on the periodic table, where elements have similar properties, is called a:

• Period

• Atomic mass unit

• Group

• Metalloid

The principle that the repeating properties of elements occur when they are arranged by increasing atomic number is called:

• Law of Conservation of Mass

• Periodic Law

• Atomic Theory

• Law of Independent Assortment

A unit of mass equal to 1/12 the mass of a carbon-12 atom, used to express atomic and molecular weights, is called:

• Gram

• Kilogram

• Atomic Mass Unit (amu)

• Dalton

Tags

NGSS.HS-PS1-7

Elements that are usually shiny, malleable, ductile, and good conductors of heat and electricity are:

• Nonmetals

• Metals

• Metalloids

Elements located in the middle of the periodic table (groups 3–12), often forming colored compounds and having variable oxidation states, are:

• Alkali metals

• Alkaline earth metals

• Transition metals

• Halogens

Elements that are usually dull, brittle, and poor conductors of heat and electricity are:

• Nonmetals

• Metals

• Transition metals

• Alkali metals

Elements with properties of both metals and nonmetals, often found along the “stair-step” line on the periodic table, are:

• Noble gases

• Metalloids

• Halogens

• Transition metals

The negatively charged particles in the outermost shell of an atom that determine chemical reactivity are called:

• Neutrons

• Protons

• Valence electrons

• Ions

The highly reactive elements found in Group 1 of the periodic table are:

• Transition metals

• Alkali metals

• Alkaline earth metals

• Halogens