The horizontal rows of the periodic table are known as

The vertical columns of the periodic table are known as

The series of elements that contains mostly man‐made elements

The transition elements are located

Elements that have properties of both metals and nonmetals

The stair‐step line running diagonally from aluminum to polonium divides the

Metals have low electrical and thermal conductivity.

Metals have high electrical and thermal conductivity.

The basic building blocks of all substances are known as

The most common physical state of the elements is

The alkali metals are located in ______________ of the periodic table

Elements that are malleable (able to be hammered) are

A sample of an unknown element is found in a laboratory cabinet. Upon inspection, it is observed that the element has a dull surface, shatters into many pieces when hit with a hammer, and is a poor conductor of both heat and electricity. It is concluded that this element would be classified as a ____.

What particles are found in the nucleus of an atom?

Which subatomic particle has a charge of zero?

The atomic number tells the number of _____ in the atom.

The number of protons and neutrons in a nucleus is the

Heat transfer within or between solid objects.

Heat transfer into or out of fluids.

Heat transfer due to packets of energy called photons that can travel through many substances, even empty space.

Thermal energy that flows due to a difference in temperature.

A method by which heat flows (conduction, convection, radiation).

A material that slows down heat transfer.

The measure of the average speed of all particles.

The total energy of all particles in an object.

The flow of thermal energy always goes from

Phase change from solid to liquid

phase change from liquid to solid

phase change from gas to liquid

phase change from liquid to gas

phase change from solid to gas (dry ice does this)

phase change from gas to solid (gets super cold VERY fast)

phase change

H2O is the molecular formula of

Refers to the tendency of atoms to prefer to have eight electrons in the valence shell.

Changes from Solid => Liquid => Gas is due to

Changes from Gas => Liquid => Solid is due to

Valence electrons are those electrons that reside in the outermost shell surrounding an atomic nucleus.

Elements in Group 4 have _ valence electrons.

Elements in Group 18 have _ valence electrons.