Atom parts and nonmetals/metals and Periodic table
Proton
inside the nucleus, + (positive), holds the identity of an element
Akali Metals
What is the general trend for electronegativity displayed by the periodic table?
Increases up and to the right, except for the noble gases
What happens when surface area is increased?
There is a greater chance of collision, therefore the rate of reaction increases.
Represented by Helium atom
Alpha
Electrons
outside the nucleus (in the cloud), - (negative), responsible for the charge of an element
Alkaline Earth Metals
Metals, reactive, form ionic bonds, Valence e- 2, charge +2, belongs to Alkaline Earth Metals and Alkali Metals
What is the general trend for ionization energy displayed by the periodic table?
Increases up and to the right
The source of energy in stars and the sun
Fusion
The particle that is the most dangerous of all three
Gamma
Neutron
Halogens
Highly reactive, Valence e- 7, charge -1, belonsg to Alkali Metals
What is the general trend for atomic radius displayed by the periodic table?
Increases down and to the left
Releases the most energy
fission
This particle has a medium penetrating power
Beta
What are some characteristics of nonmetals and metals?
Nonmetals: form anions, dull, colorless, poor conductors, low melting point, often gases
Metals: form cations, metallic, good conductors, high melting point, mostly solids
Noble Gases
Non-reactive, Valence e- 8, charge 0, bonds to NO elements
What's the difference between an inhibitor and a catalyst?
An inhibitor slows down the reaction. A catalyst speeds up the reaction.
More "controlled" by man
fission
An electron is released
Beta
What are the 2 most reactive groups on the periodic table? Why are they so active?
The halogens and the Akali Metals (they are both 1 electron away from a full shell)
Keep going
Cass
What is concentration and what happens when concentration is increased?
Concentration is the amount of molecules per volume (how many molecules in a particular space). Increasing the concentration should increase the number of collisions, therefore increasing the rate of reaction.
Requires two atoms at the start
fusion
Requires lead to shield from it
Gamma