Chapters 11 and 12 Review

In Thomson's "plum pudding" model of the atom, the plums represent ___________________.

• Atoms

• Electrons

• Neutrons

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

• Carbon

• Boron

• Copper

What is necessary for substances to burn?

• Carbon

• Oxygen

• Hydrogen

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

• Period

• Actinides

• Periodic

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

• Alkali Metals

• Transition Metals

• Alkaline-Earth Metals

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

• Electron

• Neutron

• Atom

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

• Isotope

• Neutron

• Proton

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

• Period

• Family

• Group

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

• Halogens

• Periodic Law

• Periodic Statement

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

• Atomic Number

• Atomic Mass Unit (AMU)

• Electron Cloud