Diamond and soot are very different, yet both are natural forms of ___________________.

What is necessary for substances to burn?

The days of the week are ____________________ because thy repeat in the same order every 7 days.

The group of elements that don't have individual names are called the _____________________.

A particle that cannot be cut is called a(n)_______________.

The subatomic particle that has a positive charge is called the ___________________.

The horizontal row on the periodic table is called a(n)_______________________.

The rules that states that the repeating chemical and physical properties of elements change periodically with the atomic number of elements is the _________________.

A unit of mass that describes the mass of an atom or molecule is known as the __________________.

The central region of the atom is called the ______________.

An atom that has the same number of protons but different number of neutrons is known as a(n)________________.

Negatively charged particles discovered by Thomson are called ______________.

The group made of 6 nonmetals is called the __________________.

A word describing most transition metals could be _________________________.

A word to describe actinides could be ____________.

Moseley arranged the elements by _____________.

Mendeleev arranged the elements by _____________________.

Most of the elements on the periodic table are ___________________.

An atom of gold with 79 protons, 79 electrons, and 118 neutrons would have a mass number of ______________________________.

If an isotope of uranium, uranium-235 has 92 protons, how many protons does uranium-238 have?

Another name for metalloid is __________________.

Regions where electrons are likely to be found are called the _____________________.

The number of protons in the nucleus is known as the _____________________.

The particles in the center of an atom that have no charge are called _______________.