Question | Answer |
Who was the first person to mostly create the Periodic Table? | Dimitri Medeellev |
Who was the first person to attempt to organize and predict gaps in the Periodic Table? | Newlands |
What is the definition of "periodic"? | Occurring in a regular, repeating pattern |
What did Mosely do? | Discovered each element contins a unique number of protons in a nucleus. He also rearranged Mendeleevs Periodic Table by number of protons/atomic number, rather than mass. |
What is the Periodic Law? | When elements are changed by atomic number their chemical and physical properties show regular patterns of variation. |
Which type of element is unreactive, has a full outermost energy level and has no bonding? | Noble Gases |
What determines physical properties of an element and is arranged in families in the Periodic Table? | Having the same number of valence electrons. |
The S + P orbitals is the __ group? | A or 'Representative Group' |
The B + D orbitals is the __ group? | B |
Which type of element tend to be...
-good conductors
-malleable
-ductile
-lustorus
-solids at room temp | Metals |
Which type of metals tends to be...
-Good insulators
-brittle
-dull
-often liquids and gases at room tepmperature | Non-metals |
Which group is referred as the Alkai metals? | Group 1 or 1A |
Which group is very reactive and explosive in water, has one valence electron, and never found pure in nature? | Group 1 or 1A |
Which group is referred to as the Alkaline Earth Metals? | Group 2 or 2A |
Which group is referred to as the Halogens? | Group 17 or 7A |
Which group is...
-generally non-reactive
-has full/complete valence shell
-8 valence electrons | Group 18 or Noble Gases |
What is Atomic Radius? | The size of an atom. |
What is Metallic Character? | The characteristic of an element that relates to metals. |
What is Ionization Energy? | The amount of energy it takes to remove the highest energy electron from an atom (to create a +1 charge) |
What is Electonegativity? | The ability of an element's atom to attract electrons |
From bottom left to top right of the periodic table, which trends increase? | Atomic Radius and Metallic Character
(RACK EM! R-A-C-M is going down.) |
From top right to bottom left of the periodic table, which trends decrease? | Atomic Radius and Metallic Character
(RACK RACK RACK-EM! R-A-C-M is going down.) |
What are ions? | Charged particles that can be negative or positive. |
Metals form what type of ions? | Cations |
Nonmetals form what type of ions? | Anions |
______ (Positive or Negative) ions are smaller. | Positive + |
______ (Positive or Negative) ions are larger. | Negative - |
What do ions form to obtain? | An octect. (Full outermost energy level of 8 valence electrons.) |
A nuetral atom's Atomic # is equal _______ # which is also equal to Electron #. | Proton |
Why do atoms lose valence electrons? | To form ions and/or get a full outermost energy level. |
Why are fewer energy levels used when making ions? | Ions take electrons to make an even outermost energy so it's spread across less energy levels which makes it a smaller element. |
Non-metals tend to ____ (gain or lose) electrons.
Why? | Gain
They are less likely to use ionization energy; they want to to fill their outermost energy level. |
Metals tend to _____ (gain or lose) electrons?
Why? | Lose
Because they are more likely to use ionization energy because they want to give up electrons to have equal outermost energy levels. |
What is Successive Ionization Energy? | Energy that takes from levels beyond the outermost level of valence electrons. |
If an element has a high metallic character, it is ______ (unwilling/willing) to give up electrons. | Willing. |
What is shielding? | When an atom is trying to pull in an electron but because of many electrons already in the way (due to energy levels/periods) it can not put it tight. |
What is isoelectric? | When ions electrons equal to a nuetral atom and they are alike. |