Term
|
Definition
| The total mass remains constant during a chemical change |
|
|
Term
| Chemical reaction that illustrates Law of Conservation |
|
Definition
| Mercury + oxygen yields mercury || oxide |
|
|
Term
|
Definition
Form of matter characterized by rigidity; relatively incompressible and has fixed shape and volume
Ex. Metal |
|
|
Term
|
Definition
Form of matter that is a relatively incompressible fluid; a liquid has a fixed volume but no fixed shape
Ex. Water |
|
|
Term
|
Definition
Form of matter that is an easily compressible fluid; a given quantity of gas will fit into a container of almost any size & shape
Ex. Oxygen |
|
|
Term
|
Definition
A characteristic that can be observed for a material without changing its chemical identity
Ex. Color, Size, Shape |
|
|
Term
|
Definition
A characteristic of a material involving its chemical change
Ex. Heat combustion, reactivity, PH factor |
|
|
Term
|
Definition
A change in the form of matter but not in its chemical identity
Ex. melting an ice cube & breaking a bottle |
|
|
Term
|
Definition
A change in which one or more kinds of matter are transformed into new matter or several kinds of new matter
Ex. Rusting of Iron & Burning of wood |
|
|
Term
|
Definition
A sample of matter with both definite and constant composition with distinct chemical properties
Ex. Water, Diamond, Gold |
|
|
Term
|
Definition
| A substance that has been contaminated with other materials that differ in chemical composition |
|
|
Term
|
Definition
A substance that cannot be decomposed by any chemical reaction into simpler substances
Ex. Iodine, Magnesium, & Mercury |
|
|
Term
|
Definition
A substance composed of 2 or more elements chemically combined
Ex. Water, Hydrogen Peroxide, Sodium Chloride (salt) |
|
|
Term
|
Definition
| A material that can be separated by physical means into 2 or more substances |
|
|
Term
|
Definition
| A mixture that consists of physically distinct parts, each with different properties |
|
|
Term
|
Definition
| A mixture that is uniform in its properties throughout given samples |
|
|
Term
|
Definition
A physical property of a system that does not depend on the system size or the amount of material in the system
Ex. Color & Hardness |
|
|
Term
|
Definition
A physical property of a system that is directly proportional to the amount of material in the system
Ex. Weight & Length |
|
|
Term
|
Definition
| A group of similar separation techniques. Each technique depends on how fast a substance moves, in a stream of gas or liquid, past a stationary phase to which the substance is slightly attracted |
|
|
Term
|
Definition
| Generally used for identifying components of colored mixtures, such as M&Ms. Using paper to absorb different pigments |
|
|
Term
|
Definition
| Used if one has a solution containing substances that need to be separated. Pour mixture through column containing powdered chalk, then add pure liquid. Substances will begin to separate |
|
|
Term
|
Definition
| Moving stream is a gaseous mixture of vaporized substances, along with another gas (ex. helium) which is the carrier. Stationary material is either a solid, or a liquid adhering to a solid, within a column. As gas goes through the column, different vaporized substances are attracted to the carrier. |
|
|
Term
| How would Chromatography be used in a lab situation? |
|
Definition
| You could use paper Chromatography to separate M&M dye to find out its components for different colors. |
|
|
