Atomic Structure
Name the three subatomic particles and their charge.
Protons - positive
Neutrons - no charge/neutral
Electrons - negative
What determines an atom's reactivity?
Valence Electrons
Where are valence electrons located in an atom?
The outer most energy shell
Which way do periods go on a periodic table, and what do they tell you about an atom?
Periods go across the table (like a sentence goes across a page and ends with a period) and it tells you how many energy levels an atom has
Draw lithium in its ground state
See teacher for answer
How many electrons can fit in the first three energy levels?
2-8-8
Which type of bonding involves sharing valence electrons?
Covalent bonding
How reactive will elements be in the Noble Gas family?
Nonreactive
What family do elements in group one belong to?
The alkali Metals family
Draw helium in an excited state
How do you figure out how many neutrons are in Lithium?
Subtract the atomic number from the atomic mass (the number of protons from the atomic mass)
Lithium has 4 neutrons
Describe what happens when atoms create ionic bonds.
One atom donates or transfers electrons to another and become bonded.
How reactive are elements found in group 15?
Reactive
Where on the periodic table can elements with similar bonding characteristics and chemical properties can be found?
In the same group or family
What is meant by wave-particle duality?
Light can act like a wave and like a particle
If you add more of this subatomic particle to an atom, you will change the element.
Protons
What type of bond will form between a metal and a nonmetal?
ionic
What would the Lewis Dot look like for Carbon?
A 'C' with 4 dots around it.
I am an element with 5 energy levels and two valence electrons
Sr - Strontium
What do electrons release when returning to the ground state?
A photon of light
What do neutrons do to an atom?
Neutrons add mass
What type of bond will form between Oxygen and Chlorine?
Covalent
Name an element that would be considered extremely reactive.
Any element in groups 1 or 17
Where can elements with the highest ionization energy be found?
In the upper right hand corner of the table
Which behaviors describes light behaving like a particle? Select 2
A) Light is emitted in short bursts
B) Light is composed of oscillating electric and magnetic fields
C) Light waves may interfere with one another
D) A spray of electrons may be emitted from metals when hit with photons
A and D