Electron Configurations
Which electron configuration block contains the first 2 columns?
s-block
pH less than 7
Acid
What is used to convert mole to mole of another elements?
Mole Ratio
Coefficients of chemical Reaction
A bond that is characterized by donating and accepting electrons.
Ionic Bond
This law states that at the end of the reaction there should be the same amount of stuff at the end.
Law of conservation of mass
Draw the Bohr Model of Carbon.
See Picture
Process of adding a known concentration of a base to an acid to determine the concentration of the acid.
Titration
Name of the number 6.022x10^23. When is this number used?
Avogadro's Number. Converting to/from particles, molecules, or atoms.
A covalent bond is usually formed between what kinds of elements?
Non-metals
At the end of a chemical reactions the molecules that are created are called.
What is the electron configuration of bromine?
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^5
or
[Ar]4s23d104p5
Molarity Equation
M = n(moles of solute)/V (mL of solvent)
Balance the chemical equation:
__CH4 + __Cl2 --> __CCl4 + __ HCl
1,4,1,4
How are electrons transferred in covalent bonds?
Electrons are shared between 2 nonmetals
This type of chemical reaction usually releases energy in the form of heat or light.
Exothermic reaction
What element has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^7?
The point in which an acid and base equal and the color change occurs in a titration.
Equivalence Point
2 Li + Br2 → 2 LiBr
If 75 grams of Li are reacted, how many particles of LiBr will be produced?
6.5 × 10^24 particles LiBr
Name a property of a metal.
luster, ductile, malleable, thermal, and electrical conductors
Provide one piece of evidence that a chemical reaction has occured.
gas production, color change, smell, light, new substance is formed
What is the electron configuration of In? Use noble gas configuration.
[Kr]5s^2 4d^10 5p^1
Calculate the molarity if 15 grams of NaCl are dissolved in 10mL of water.
0.0257M
Fe2O3 + 3 H2 → 2 Fe + 3 H2O
If 3.0 × 10^21 particles of Fe2O3 are reacted, how many moles of Fe will be produced?
0.010 moles Fe
Negatively charged atoms are called...
anions
Describe a physical property of matter.
characteristic of a substance that can be observed without changing it.