Terms

Unit One A Vocab


Purity- clear, tasteless, odorless and colorless

Filtrate - the liquid collected after it has been filtered

Adsorb - attract and hold onto a surface

Periodic Table - an arragment of the elements in order of increasing atomic number, such that elements wich similar 
properties are lovated in the same vercial calamb 

Chemical Formula - a symbolic expression representing the elements contained in a substance, together with substcripst that 
indicate the relitive numbers of atoms of each element 

Chemical Equations - a sybolic expression sumerizing a chemcal reaction 2 H2 +  

Chemical Reaction - entails breaking and forming of chemical bonds causin atoms to become rearaged into new substences 
Models - representation 

Chemical Symbols - an abbreviation of an elements name ex. calsium becomes Ca

Product - the substence or substences formed from the rearagments of the reactent adoms 




Filtration - solid particles that are separated from a liquid by passing the mixture though a material that retains the solid particles and allows the liquid to pass through

Percent Recovery - the percent of original foul  water sample recovered as purified water


Histogram - a bar graph that shows the percent recovery dada of foul water


Range - difference between the largest and smallest values in a data set


Average - value determined by adding all values together and dividing the sum by the total number of values

Mean - result of average


Median - middle value in a data set


Electrical Conductivity - the ability to transmit an electric current


Tyndall Effect - the scattering of a beam of light caused by reflection from suspended particles


Hydrologic Cycle (or water cycle) - repetitive processes of rain fall, run off, evaporation, condensation that circulate water within Earth's crust and atmosphere


Direct Water Use - that which can be directly measured


Indirect Water Use - hidden uses of water that are commonly overlooked


Gaseous State - state of matter having no fixed volume or shape


Liquid State - state of mater with a fixed volume but no fixed shape

Solid State - state of matter having a fixed volume and fixed shape


Surface Water - water found on Earth's surface


Ground Water - water from an aquifer or other underground source


Aquifer - a structure of porous rock, sand, or gravel that holds water beneath Earth's surface

02 -> 2H20 

Reactants - starting substences in a chemical reaction 

Balenced - the toatal number of each type of atoms is the same for both reactencts and products 

Diatomic Molecules - two bonded atoms of the same element 

Chem Vocab B1 - B4 

Matter - anything that occupies space and has mass. ex. solids, liquids, and gasses 

Physical Properties - properties that cam be observed and measured without changing the chemical makeup of the substance 

Density - which is the mass of material within a given volume 

freezing point - 

Aqueous solution - water base solution 

Mixture - the result when thwo or more substances combone, and yet the substances retain their individual properties 

Heterogeneous Mixture - ex. foul water 

Suspension - if the solid particles are large enough that they can be separated by using filtration 

Tyndall effect - the scattering of the light 

colloid - ex. milk 

homogeneous mixture - or a mixture that is uniform throughout ex. solutions 

Solutions - are homogeneous mixtures 

Solute - the dissolved substance ex. salt 

Solvent - the dissolving agent ex. water

particulate level - the realm of unseen atoms, ions, and molecules in contrast to observable microscopic entities 

Atoms - building blocks of matter 

Element - matter that is made up of only one kind of atom ex. oxygen 

Compound - substance that is composed of the atoms of two or more elements linked together chemically in certain fixed properties 

Chemical Formulas - a symbolic expression representing the elements contained in a substence together with subscripts that indicates the relative numbers or atoms of each element 

Substance - a molecule that interacts with an enzyme and undergoes a reaction 

Molecule - the smallest unit of a molecular compound that retains the properties of that substance 

Macroscopic - large scale

Subsript - number written below the normal line of letters in a chemical formula, it indicates the number of atoms of the element are in one unit of the substance

Protons - positivly charged particles in an atom 

Electrons - negatively charged particles

Neutrons - neutral particles 

Ions - electrically charged atom or group of atoms

Ionic Compounds - substances that are composed of positive and negitive ions (neutral because the postitive and negative electrons balance each other out)

Anion - a negitively charged ion 

Cation - a positvely charged ion 

Polyatomic ion - an ion consisting of a group of bonded atoms 

Confirming tests - a lab test giving a positive result if a particular chemical species is present 

Precipitate - an insoluble solid substance that has separated from a solution 

Qualitative tests - test that identifies the presence or absence of a particular substance in a material 

Quantitative tests - tests that determine the amount of a specific substance present in a sample (numbers) 

Reference Solution - a solution of known composition used as a comparison 

Data - objective pieces of information 

Saturated - 

Solubility - maximum quantity of a substance that will dissolve in a certain quanity or water at a specified temperature 
Solubility Curve - 

Unsaturated Solution - a solution that contains less dissolved solute than the amount that the solvent can normally hold at that temperature 

Supersaturated solution - when you cool a saturated solution without causing any solid crystals to form producing an unstable solution that contains more solute than could usually be dissolved at that temperature 

Polar molecule - has an uneven distribution of electrical charge witch means that each molecule has a partial positive region at one end and a partial negative region at the other end 

parts per million - 

Parts pet Billion - 

Concentration - refers to how much solute is dissolved in a specific quantity of solvent or solution 

percent (values) - another way to express concentration 

heavy Metal ions - 


Green Chemistry - 


Physical Properties - 


Physical Change - 


Chemical Change -


Chemical properties - 


Combustion - 


luster - 


ductile - 

Meatles 

Nonmetals 

Metalloids - 

Conductor - 

nonconductor - 

malleable - 

Brittle - 

Atomic number - 

Nucleus 

Mass Number - 

Isotopes - 

Periods 

Periodic Relationship - 

Group - 

Family - 

Alkali Metal Family - 

Noble Gas Family - 

Halogen Family - 

Atmosphere - 

Hydrosphere - 

Lithosphere - 

Minerals - 

Ore - 

Ductility -