Vocabulary
The average of protons and neutrons in the nucleus of an atom.
What is the atomic mass?
An arrangement of the elements showing the repeating pattern of their properties.
What is the Periodic Table of Elements?
The metals in Group 1 from lithium to francium. They are reactive and so soft that you can cut them with a plastic knife.
What are alkali metals?
Group 15 contains two nonmetals-nitrogen and phosphorus and two metalloids-arsenic and antimony.
What is the Nitrogen Family?
Write the equation to determine the number of neutrons in an atom.
What is Neutrons= Atomic Mass-Protons
An atom with the same number of protons and a different number of neutrons from other atoms of the same element.
What is an isotope?
Elements in the same vertical column of the periodic table of elements
What is a group?
The metals in Group 2. These metals are harder and denser and they melt at higher temperatures than the alkali metals. Never found uncombined in nature. Very reactive but not as reactive as the alkali metals.
What are alkaline metals?
In Group 16 it contains three nonmetals-oxygen, sulfur, and selenium and two metalloids-tellurum and polonium
What is The Oxygen Family?
The chemical symbol for oxygen is .....
What is O?
The three parts of an atom.
What are the protons, neutrons, and electrons?
A horizontal row in the periodic table of elements.
What is a row?
The elements in Groups 3 through 12. They include iron, copper, nickel, gold, and silver. Most are hard and shiny with high melting points.
What are transition metals?
Alone in the upper left corner of the periodic table is this element-the element with the simplest atoms. Most of it is combined with oxygen in water.
What is hydrogen?
In the periodic table, the atomic number is located above the chemical symbol or below the chemical symbol?
What is above the chemical symbol?
The number of protons in the nucleus of an atom.
What is the atomic number?
A one or two letter abbreviation for an element
What is a chemical symbol?
Group 13 contains this metalloid followed by post transition metals. It is used in materials of high strength and light weight such as fiberglass.
What is the Boron Family?
Group 17 contains the nonmetals fluorine, chlorine, bromine, and iodine
What is The Halogen Family?
In the periodic table, the atomic mass is located above or below the chemical symbol?
What is below the chemical symbol?
The nucleus of an atom consists of these two particles.
What are the protons and neutrons?
The father of the Periodic Table of Elements
Who is Dimitri Mendeleev?
In Group 14, this is the only nonmetal. Plays an especially important role in the chemistry of life. Proteins, DNA, and fats all contain this.
What is The Carbon Family?
The elements in Group 18. They do not ordinarily form compounds. One common element is helium.
What are the Noble Gases?