Game Smartz

Elements and the Periodic Table

Science

Elements and the Periodic Table Chapter Video

Elements and the Periodic Table Chapter Video

alkali metal

elements in Group 1 of the periodic table, like lithium, sodium and potassium
alkali metal Simple Definition

conductivity

the ability of a material to let heat or electricity pass through
conductivity Simple Definition

diatomic molecule

a particle consisting of two atoms
diatomic molecule Simple Definition

group

elements in the same vertical column of the periodic table
group Simple Definition

halogen

an element in Group 17 of the periodic table, like chlorine
halogen Simple Definition

luster

the way a mineral's surface reflects light
luster Simple Definition

metal

an element that is a good conductor of heat and electricity
metal Simple Definition

metalloid

an element that shares properties with metals and nonmetals, like a semiconductor
metalloid Simple Definition

noble gas

an element in Group 18 of the periodic table, like helium, neon and argon
noble gas Simple Definition

nonmetal

an element that is a poor conductor of heat and electricity
nonmetal Simple Definition

period

a horizontal row of elements of the periodic table
period Simple Definition

periodic table

a chart of all the elements, arranged by their physical and chemical properties
periodic table Simple Definition

radioactive decay

the breakdown of an unstable atomic nucleus, this releases particles and energy
radioactive decay Simple Definition

radioactivity

the ability of an unstable nucleus to emit radiation
radioactivity Simple Definition

semiconductor

a material that conducts electricity under certain conditions, it has properties of both metals and nonmetals
semiconductor Simple Definition

transition element

an element in Group 3 to Group 12 of the periodic table, they are all metals
transition element Simple Definition

Related Chapters