Identify the element
A noble gas and has two valence electrons
Helium
This rule is satisfied with noble gases, leaving them unreactive.
octet rule
Add the right amount of energy to a liquid and this process occurs.
Evaporation
Made symbols for elements, along with supercripts.
Jacob Berzelius
type of element that surround the stair step
Metalloids
The cation in table salt
sodium
Metallic bonds exhibit this, allowing metals to have luster, conductivity and ductility.
Electron sea
Oxidation state of gold in AuCl2
+2
This experiment used a negatively charged rays and crookes tubes to discover electrons
Cathode ray experiment
the largest atomic size of the halogens
Astatine
The only polyatomic ion that is also a cation.
ammonium
As you descend in the periodic table these levels are added, giving a greater atomic radius.
Energy levels
In a compounds binomial name this ion is always listed second.
Anion
This man found a repeating pattern of eight in the mass of elements.
John newlands.
Hydrogen is to alkali metal as ___________ is to solid.
gas
Pewter a metal alloy is mostly made of tin and this other element with 82 protons.
Lead
In the niels bohr mode, what allows the electron to move up an orbital?
Heat and energy
No need for an octet, this elements prefers to have a duet.
hydrogen
__________is to plum pudding, as neutron is to nuclear model.
electron
Elements has 8 electrons and 8 neutrons
Oxygen
This group is categorized with having 5 valence electrons
Nitrogen group
Interactions between these two subatomic particles cause the atomic radius in elements to decrease and electronegativity to increase.
electrons and protons
This element has 4 valence electrons and is nearly always the centralized atom
carbon.
Philosophized the idea of the atomos
Democritus
This elements' symbol alphabetically is right before yttrium
Xenon
Lithium is to alkali metal as beryllium is to ____________
alkali earth metal.
Its the reason why roman numerals must be used when naming transition metals.
Varied oxidation state/charge
These type of substances are bound chemically, unlike their homogenous counterparts.
pure substances/compounds
Fire couldn't possibly be an element because it requires oxygen, according to this man
Antoine Lavosier
Decipher the message with the symbols of elements.
Nah bro
sodium, hydrogen, bromine, oxygen