A table in which all the known elements are arranged by properties and are represented by one- or two-letter chemical symbols
Periodic Table of Elements
A characteristic that can be observed or measured
without changing the substance;
for example, color, melting point, and conductivity.
without changing the substance;
for example, color, melting point, and conductivity.
Physical Property
Most elements are metals; they are typically solid, shiny, malleable, and good conductors of heat and electricity.
Metals
Elements that are typically not shiny, not malleable, and poor conductors of heat and electricity; usually gases or brittle solids.
Nonmetals
Elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors.
Metalloids
A physical property; the way the surface of a substance shines or reflects light; most general classification is between metallic (shiny) and nonmetallic (dull or glassy).
Luster
A physical property; the ability or power to easily transfer heat, electricity, or sound.
Conductivity
A physical property; able to be shaped or formed into thin sheets by hammering or pressure.
Malleability
A physical property; tendency to break, snap, or crack
without first bending or changing shape as a result of
application of little force; an example is glass, which
shatters easily.
without first bending or changing shape as a result of
application of little force; an example is glass, which
shatters easily.
Brittle
A substance that resists electric current, or a material that resists the flow of heat.
Insulator
A substance that allows the flow of electric charge or transfers thermal energy through matter.
Conductor
A substance that displays the property of electrical
conductivity between that of a conductor and that of an
insulator; the foundation of modern electronics.
conductivity between that of a conductor and that of an
insulator; the foundation of modern electronics.
Semiconductor
Matter is anything that has volume and mass. Matter occurs as elements, compounds, and mixtures.
Matter
Sort or group together based on shared characteristics,
physical properties, or chemical properties.
physical properties, or chemical properties.
Classify
A pure substance composed of the same type of atom throughout.
Element
Metal or metalloid
Lustrous (shiny)
Metal
Good conductor of heat
Metal
Good conductor of electricity
Metal
High melting point
Metal
High density
Metal
Malleable (can be hammered)
Metal
Ductile (can be drawn into wires)
Metal
Usually solid at room temperature
Metal
Opaque as a thin sheet (can’t see through it)
Metal
Does make bell-like sounds when struck
Nonmetal
Not lustrous (dull appearance)
Nonmetal
Poor conductor of heat and electricity
Nonmetal
Nonductile (cannot be drawn into wires)
Nonmetal or metalloid
Brittle solid
Nonmetal
May be solid, liquid or gas at room temperature
Nonmetal
Transparent as thin sheet
Nonmetal
Does not make bell-like sounds when struck
Metalloid
Brittle but lustrous (shiny)
group 1
group 2
group 3
group 4
group 5
group 6
group 7
group 8
metal
metalloid
nonmetal
gas
liquid
noble gases