Unit 3 review Flashcards
how can you tell if its a Synthesis reaction?
if there is one product Ex. Na + Cl = NaCl
how can you tell if its a Decomposition Reaction?
There is one reactant Ex. H2 = CO2 + H2O
how can you tell if its a Single Replacement reaction?
Single metal + Compound Ex. Cu + AgNO3 = Ag + Cu(NO3)2
how can you tell if its a Double Replacement reaction?
2 compounds on both sides Ex. KI + Pb(NO3)2 = K
how can you tell if its a Combostion Reaction?
The products are ALWAYS CO2 + H2O
What does soluble mean?
Will dissolve in water
what do soluble compounds form?
An Aqueous solution (aq)
what is Insoluble?
will NOT dissolve in water
what do Insoluble compounds form?
Solid Products; Percipitates (s)
Define precipitate
insoluble substances are deposited as a solid from a solution
Define Aqueous
a compound that dissolves in water
what does (aq) mean?
aqueous
what does (s) mean
solid products; percipitates
how do you find Grams To moles?
take the number of grams divided by the molar mass of the element
how do go from moles to grams?
take the number of moles x the molar mass of the element
how do you go from moles to atoms?
take the number of moles x 6.02x10^23
how do go from atoms to moles?
the number of atoms divided by 6.02x10^23
Atoms can be _____, ______. _____, or ____
Particles, Ions, Molecules, or Formula Units
How do you calculate Percent Composition?
- Mass (in grams) of the element 2. Mass (in grams) of the compound 3. Divide the mass of the element by the mass of the compound 4. Multiply the answer times 100%
What are the properties of a Colvalent bond?
-Molecular structure -solid, liquid, & gas -Melting point low; below 300c -non-metals -Poor conductors -Has prefixes
What are the properties of an Ionic bond
-Crystalline Structure -Solid -High Melting point; above 300c -Metals & Non-metals -Transfer electrons -Good conductor
if there is one product Ex. Na + Cl = NaCl
how can you tell if its a Synthesis reaction?
There is one reactant Ex. H2 = CO2 + H2O
how can you tell if its a Decomposition Reaction?
Single metal + Compound Ex. Cu + AgNO3 = Ag + Cu(NO3)2
how can you tell if its a Single Replacement reaction?
2 compounds on both sides Ex. KI + Pb(NO3)2 = K
how can you tell if its a Double Replacement reaction?
The products are ALWAYS CO2 + H2O
how can you tell if its a Combostion Reaction?
Will dissolve in water
What does soluble mean?
An Aqueous solution (aq)
what do soluble compounds form?
will NOT dissolve in water
what is Insoluble?
Solid Products; Percipitates (s)
what do Insoluble compounds form?
insoluble substances are deposited in solid form from a solution
Define precipitate
a compound that dissolves in water
Define Aqueous
aqueous
what does (aq) mean?
solid products; percipitates
what does (s) mean
take the number of grams divided by the molar mass of the element
how do you find Grams To moles?
take the number of moles x the molar mass of the element
how do go from moles to grams?
take the number of moles x 6.02x10^23
how do you go from moles to atoms?
the number of atoms divided by 6.02x10^23
how do go from atoms to moles?
Particles, Ions, Molecules, or Formula Units
Atoms can be _____, ______. _____, or ____
- Mass (in grams) of the element 2. Mass (in grams) of the compound 3. Divide the mass of the element by the mass of the compound 4. Multiply the answer times 100%
How do you calculate Percent Composition?
-Molecular structure -solid, liquid, & gas -Melting point low; below 300c -non-metals -Poor conductors -Has prefixes
What are the properties of a Colvalent bond?
-Crystalline Structure -Solid -High Melting point; above 300c -Metals & Non-metals -Transfer electrons -Good conductor
What are the properties of an Ionic bond
Empirical Formula
Shows the ratio of elements in a compound
how do you do empirical Formula
- Percent to Mass
- Mass to Mole
- Divide by Small
- Multiply ‘till Whole
Molecular Formula
shows how many atoms of each are present in a molecule of the compound
