Atomic Theory
have the same number of protons, but different numbers of neutrons and therefore different atomic masses.
What is isotopes of an atom?
Surrounding the staircase line are the elements which display both metal and non-metal properties.
What is a metalloid?
Molecular compounds are formed because they have a special electron interaction.
What is sharing valence electrons?
Every solution with a pH above 7
What is basic?
6.02 x 1023
What is Avogadro's number?
The atom is a positively charged sphere in which negatively charged electrons are embedded, like raisins in a bun.
What is Thomson's Raisin Bun Model?
tells you how many energy levels you have
What is a period?
The name of K2S
What is potassium sulfide?
The products of combining acid and base together through a special process.
products= salt and water; neutralization
it is determined by adding the atomic molar mass of each element for that compound
What is Molar Mass of a Compound?
This indicates# of protons in the nucleus as well as the # of electrons (since all atoms are neutral in charge).
What is Atomic number?
Stable elements with full valence shells
What are the noble gases?
The iron ion used in the following compound Fe2O3
What is iron (III)?
carbon dioxide and water vapor
What is combustion products?
If I had 4 moles of sodium hypochlorite, how many particles would I have?
What is 2.408 x 1024?
There are 7 electrons in this element.
What is Nitrogen?
positive charge (has fewer e- than p+)
What is a cation?
the chemical formula for sucrose
What is C12H22O11?
where energy is added to start the reaction. Eg. Photosynthesis, instant cold packs
What is endothermic?
molar mass of Na2CO3
What is 105.99 g/mol?
How many neutrons are there in uranium-238 ?
What is 146?
In the compound magnesium nitride, this ion has LOST 2 electrons.
What is magnesium?
the chemical name for NiSO4
What is nickel (II) sulfate ?
During a chemical reaction, the total mass of the reactants is always equal to the total mass of the products.
What is Law of Conservation of Mass?
Find the mass of 2.5mol of MnCl4
What is 4.9 X 102 g?