Measurement and Matter
What is a Heterogeneous mixture?
A heterogeneous mixture is a mixture where the components of the mixture are not uniform or have localized regions with different properties.
Group 17
Halogens
6.02*10^23
What is Avogadro"s Number?
a solid that forms from solution during a chemical reaction
Precipitate
a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
Mole Ratio
What is the word for when two or more atoms that are chemically bound together?
A molecule
the amount of energy required to remove the most loosely bound electron
Ionization energy
the simplest formula, whole number ratio of atoms in a compound
Empirical Formula
the total mass of the reactants must equal the total mass of the products
principle of conservation of mass
The mass of 1 mole of any substance. Must use the periodic chart to obtain this value.
units: g/mol
Molar Mass
What is it called when you have to sift a heterogenous mixture through paper to separate the liquid and solid?
Filtration
which element has lowest electronegativity
francium
the mass in grams of one mole of a substance. same number but when talking about atomic formula mass, we use AMU. when talking about moles we use g/mol
Gram Formula Mass
when 2 or more substances combine to make a single product
synthesis reaction
A number in front of a chemical formula in an equation that indicates the relative number of moles of reactants and products involved in a reaction.
Coefficient
substances that transform into chemically different substances
Chemical Change
How many protons does fluorine have?
9
Name all the types of bonds
ionic, covalent and metallic bonding
a material used to decrease the rate of a chemical reaction
inhibitor
In a chemical reaction, the state in which the rate of the forward reaction equals the rate of the reverse reaction, so that the relative concentrations of the reactants and products do not change with time.
Chemical Equilibrium
digits recorded for a measurement or calculation result as a reflection of the degree of precision of the initial measuring tool; includes all known digits of a measurement plus one estimated digit
Significant Figures
Where is electronegativity the strongest?
Top Right
a positively charged ion
Cation
a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
Combustion Reaction
22.4 Liters