Reactions
The components that undergo the reaction
Reactants
Periods are the horizontal rows on the periodic table, and tells you how many orbitals an element has
What is the current model of the atom?
electron cloud model
The equation for density...
p = m/V
Ionic bonds ____________ electrons
Give/take
The substance you get after the reaction
Products
Define groups.
Vertical columns on the periodic table that tell you the number of valence electrons an element has.
Which model of the atom is a solid sphere
Dalton
If a ball has a volume of 2 m3 and a mass of 0.5 kg, what is the density?
Covalent bonds ______________ electrons
share
A reaction that ends with the products of H2O and CO2
Combustion
What is the state of Lithium at room temperature?
solid
Draw the Lewis Dot Structure for He
He has 2 valence electrons
If a cube has a density of 4 kg/m3 and a side of 2 m, what is the mass?
V = 2m * 2m * 2m = 8 m3
p = m/V --> m = pV = 8*4
m = 32 kg
Whether or stealing or sharing, all bonds want to allow what top happen to the valence electrons?
Most stable- 8 valence electron
For ionic bonds, losing valence electrons to have none would be the most stable
Name that reaction type:
2H2O -> 2H2 + O2
Decomposition
Why are noble gases noble?
They have 8 valence electrons, so they don't react
Draw the Bohr diagram for Neon
Neon has 10 electrons
Define density
Density is the ratio of the objects mass to its volume
Elements in an ionic bond are _________; elements in a covalent bond are ____________
ionic: metals and nonmetals
covalent: 2 nonmetals
Define the law of conservation of mass in terms of chemical reactions.
The mass in the beginning of the reaction must equal the mass at the end. Mass is not created or destroyed in a chemical reaction.
What are the 7 diatomic molecules?
H O F Br I N Cl
What is the order of the different atomic models?
Dalton, Thomson, Rutherford, Bohr, Electron cloud model
If a block has the same density as a ball, but a smaller volume, compare the mass of the block and ball.
The mass of the ball is more than the block, since their density is the same but the block is smaller
Give an example of a molecule (covalent) that would have a triple bond
N2