Atomic Organization
This Russian Chemist is credited with arranging elements by increasing atomic mass and predicting properties yet undiscovered elements.
Who is Mendeleev?
This term describes elements that are shiny and conduct heat and electricity well.
What are metals?
Groups are also called this word, which is often used in class.
What are columns?
The most reactive nonmetals belong to this group.
What are Halogens?
What is the atomic number?
If an element can be pulled into long, thin wires, it is described by this property.
What is ductile?
Elements in Group 1
What are alkali metals?
The least reactive elements are in this group.
What are noble gases?
In the periodic table, horizontal rows are called this.
What is a period?
Nonmetals often have more variable properties than metals. Give two common properties.
What are.....
poor conductors of heat, electricity, brittle, dull, gases at room, temperature (any two)
The alkaline Earth metals belong to which group number?
What is group 2?
Elements in the same group have the same number of what?
What are valence electrons?
Mendeleev left gaps in his table of elements not yet discovered. Why?
What is to leave room for undiscovered elements?
Metalloids have properties between metals and nonmetals. Name one use or application that takes advantage of metalloid properties.
Correct metalloid and use pair.
Transition metals are known for several typical characteristics, name 2.
What are Shiny, good conductors, malleable?
Sodium is highly reactive. State which class it belongs to and why it is so reactive.
What is an alkali metal, and it has only one valence electron and is unstable?
How are elements organized differently in the modern table compared to Mendeleev's?
Explain why most metals are solid at room temperature.
Explain how elements in the same group have similar chemical behaviors.
What is the same number of valence electrons?
Relate the reactivity of groups of elements to their number of valence electrons.
What do they need to gain or release so that they have eight either by sharing or giving away?