Which element has the highest atomic number? Lowest? and what are the numbers?
Highest: Ununoctium - 118
Lowest: Hydrogen - 1
100
What are some physical properties* of water?
solid, liquid, clear
100
What are some properties of Metals*?
Metals are generally shiny, malleable, and hard. Metals are also good conductors of electricity. Examples of metals are Gold, Silver, Iron, Uranium, and Zinc.
100
What does the *Atomic Mass* of an element tell you?
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom.
100
What is the highest atomic number on the periodic table? what does this tell us?
118, this tells us that there are 118 elements on the periodic table
200
What are three ways to find which element someone is talking about?
Atomic Number
Atomic Mass
Atomic Symbol
200
What are some chemical properties of Iron?
Ductile, Malleable, rusts in air
200
What are some properties of Non-Metals*?
Non-metals do not conduct heat or electricity very well. Non-metals are typically brittle and are not easily molded into shapes. Example non-metal elements are Hydrogen and Carbon.
200
What is the atomic mass of Helium?
32.065 or 32
200
What does the *Atomic Number* of an element tell you?
The number of Protons and Electrons the element contains
300
Define "Element*"
One of over one hundred substances that cannot be chemically converted or broken down into simpler substances and are primary constituents of matter.
300
What are the Physical AND Chemical properties of Potassium?
Physical: Silver/white, dull, soft
Chemical: Reacts in air, very reactive in water, oxidizes quickly
300
What does the "Staircase" do when referring to the periodic table?
Separates the metals from the non-metals.
300
How would you find the mass of Neon?
You add the number of Protons to the number of Neutrons. Usually the atomic mass is equal to or close to the atomic number doubled.
300
What is the name for elements 57-71?
Lanthanides
400
In which column are the noble gases located?
The 18th Column
400
Is Sodium reacting with Oxygen (air) a physical or chemical reaction?
Chemical
400
Which non-metal does the "Staircase" leave out?
Hydrogen (Atomic number 1) Which is located in the first column above the metals.
400
What would the combined mass of Helium and Phosphorus be?
111.8708 or 112
400
Which atomic numbers are referred to as Actinides?
89-103
500
What is special about the elements with the atomic numbers: 3, 11, 19, 37, 55, 87?
They are the Alkali Metals
500
Which group of elements is most reactive?
Alkali Metals
500
Are the Lanthanides and Actinides considered metals or non-metals? How do we know while looking at the periodic table?
Metals. We know this because it's located on the left of the staircase with all the other metals (when looking at their atomic numbers 57-71 & 89-103)
500
Which element has the lightest atomic mass and what is it?
Hydrogen: 1.008 or 1
500
What is special about the atomic numbers: 2, 10, 18, 36, 54, 86?