Atomic Structure
Smallest unit of matter
Atom
Rows:Left and Right
Energy Levels
Periods
Sharing electrons
Covalent bond
Result
The amount of energy in the reactants is equal to the amount of energy in the products.
Law of a Conversation of Energy
Neutral, Positive, Negative charges
Ion
Columns: Up and down
Valence Elctrons
Groups
Transferring electrons
Ionic bond
Ingredient
Reactant
The amount of matter in the reactants is equal to the amount of energy in the product.
Law of Conversation of Mass
The outer electrons
Valence electrons
Shines/ Dull
Poor conductor
Nonmetal
Both element want to gain electron
Covalent Bond
Reactant + Heat ( Absorbed) -> Products
Endothermic
The total amount of energy is the same.
What is the same between the two laws?
Circle outside the nucleus
Energy levels
High shines
Good conductor
Metal
A particle with a negative charge will attract to a particle with a positive charge.
Ionic bond
Reactants -> Products + Heat (released)
Exothermic
The mass of reactant must equal to the mass of products
Law of Conversation of Mass
They are same element name but different mass number. (S-26), (S-32)
Isotope
Happy gas
Stable
Noble gas
8 valence electrons
What does an element needs to become stable?
The energy of the element is high and heat enrgy is released to environment. The leaves Products with low energy.
Exothermic
Does this reaction follow the Law of Conversation of Mass?
Na + Cl -> NaCl
The total of amount energy is the same.