Atoms and the Periodic Table

Why are alkali metals and alkaline earth metals not found as free elements in nature?

Because electrons move freely in metals, metals are ___________.

These elements make up most of the periodic table. They can be transitional or very radioactive.

Atoms of a given element that have a different number of neutrons.

Who is the "father" of the Periodic Table?

These elements can become positive ions when they lose their outer electron(s).

Which subatomic particles are responsible for most of the mass of an atom?

These elements are found in a stairstep ling along the middle to the right side of the periodic table.

These elements gain electrons and form negative ions. They can also form ionic or covalent bonds.

An atom or group of atoms that have a positive or negative charge after losing or gaining an electron.

These elements are either a solid or a gas at room temp. They are also brittle and powdery.

How many neutrons does an atom of Niobium have?

Which group on the Periodic Table are the least reactive because they have a full outer electron shell?

Mendeleev arranged the periodic table in all of the following ways EXCEPT?

How do isotopes of an element compare?

What is the symbol for Carbon?

Based on the location of magnesium on the periodic table?

The mass number or atomic weight is equal to the sum of ___________ and _____________.

The number of protons of an atom is equal to the ____________?

The most commen elements in the human body are ______________.

Which statement correctly describes the periodic table?

This group is highly reactive and have 7 electrons in their outer layer. They can bond with a metal to form salt.

These elements exist as isolated atoms.

The horizontal rows in the periodic table are called _________.

Which subatomic particles have equal and opposite charges?

Which is NOT found in the nucleus of an atom?

A table that is arranged in periods and groups according to reactivity.

The vertical columns in the periodic table are _________.

These elements have properties of elements that can conduct electricity well and can be gas or solid at room temp.

What type of bond forms between a metal and a nonmetal?

These elements are shiny, malleable and good conductors of heat and electricity.

What is the atomic number and the number of neutrons for an atom of uranium-238?