Valence electrons and electron cloud energy levels
What does the electron cloud energy level men?
It refers to the maximum number of electrons in an energy level.
If 5 atoms of carbons are used as a reactant, how many atoms must be present as a product?
5 atoms.
What is a chemical formula?
A chemical formula is the formula for an element or a compound.
Define subscript.
Letter, number, or symbol written below the line.
What is the largest number of energy levels an element can have?
7 levels
What law states that matter cannot be created nor destroyed.
Law of conservation of mass.
What is a single replacement reaction?
A reaction in which one element replaces a second element in a compound.
What is the coefficient in H2O?
1
Which element has the most electrons?
Ununbium
50g of magnesium reacts with oxygen. How many grams of magnesium will be present after the reaction?
50 grams
How can reactions be written?
They can be written in word or chemical equations.
How many oxygen atoms in C12H22O11?
11 atoms of oxygen.
How many electrons does the first electron cloud energy level hold?
2
50g of Chlorine is used to produce 95 grams of NaCl. How much sodium was used?
45 grams
What type of reaction is this: 2H3PO4 = H2P2O7 + H2O
Decomposition
Define coefficient.
Large number and applies to the whole element/compound behind it.
What is the outer shell of electrons called?
Valence Electron
Recite the Law of Conservation of Mass.
The Law of Conservation of Mass states that matter may not be created nor destroyed.
What is a synthesis reaction?
A reaction in which two reactants result in one product.
What is the coefficient in 6H2O?
6