Term
|
Definition
| An easy way to convert units using proportions |
|
|
Term
| Convert 6 kilometers to centimeters using dimensional analysis |
|
Definition
6 km(1000mm/.001km)=6000mm/.001=
6000000mm
|
|
|
Term
|
Definition
| Whatever occupies space and can be perceived by our senses |
|
|
Term
| Law of Conservation of Mass |
|
Definition
| The total mass remains constant during a chemical change |
|
|
Term
|
Definition
| the form of matter charcterized by rigidity |
|
|
Term
|
Definition
| The form of matter that has a volume but no shape. A relatively incompressible fluid |
|
|
Term
|
Definition
| The form of matter that has neither a shape nor volume. An easily compressible fluid. |
|
|
Term
|
Definition
| Three forms of matter: solid, liquid, and gas |
|
|
Term
|
Definition
A change in the form of matter, but not in its chemical identity. This change is easily reversable
Examples: changing state, breaking, and crumbling |
|
|
Term
| Chemical change/chemical reaction |
|
Definition
A change in which one or more kinds of matter are transformed into new matter or several new kinds of matter. This change is not reversible by simple means.
Examples: burning wood, digesting food, food ripening. |
|
|
Term
|
Definition
A charecteristic that can be observed for a substance without changing its chemical identity.
Examples: physical state, melting point, and color. |
|
|
Term
|
Definition
A charecteristic of a material involving its chemical change.
Examples:reactivity and oxidation state |
|
|
Term
|
Definition
| A substance that cannot be decomposed by a chemical reaction into simpler substances. |
|
|
Term
|
Definition
| A substance made of two or more chemically combined elements |
|
|
Term
| Law of Definite Proportions |
|
Definition
| A pure compound, whatever its source, always contains definite or constant proportions of the elements by mass |
|
|
Term
|
Definition
| A material that can be seperated by physical means into two 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
| The closeness of a set of values obtained from identical measurements of quantity |
|
|
Term
|
Definition
| The closeness of a single measurement to its true value |
|
|
Term
|
Definition
|
|
Term
| Celcius-Kelvin Conversion equation |
|
Definition
Tk=(tc x (1k/1°C)) + 273.15K
|
|
|
Term
| Fahrenheit-Celcius Conversion equation |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
- All matter is composed of indivisible atoms
- An element is a type of matter composed of only one type of atom
- A compound is a type of matter composed of two or more chemically combined elements
- A chemical reaction consists of the rearrangement of the atoms present in the reacting substances to give new chemical combinations present in the substances formed by the reaction
|
|
|
Term
|
Definition
| The center of an atom is a positively charged nucleus made up of positive protons and neutral neutrons. Outside of the nucleus are negatively charged electrons which make the atom overall neutral. |
|
|
Term
|
Definition
| The number of protons in the nucleus of an atom |
|
|
Term
|
Definition
| The total number of protons and neutrons in the nucleus of an atom |
|
|
Term
|
Definition
| Atoms whose nuclei have the same atomic number but different mass number. |
|
|
Term
|
Definition
| The average mass of all the isotopes of an element factoring the abundance in nature of each specified isotope. |
|
|
Term
|
Definition
| 6.0221367 x 1023. This number represents the number of protons or neutrons in one gram. The average atomic mass on the periodic table is given for a sample of 6.0221367 x 1023 atoms of that element. |
|
|
Term
|
Definition
| the distance between any two adjacent identical points of a wave |
|
|
Term
|
Definition
| The number of wavelengths of that wave that pass a fixed point in one unit of time |
|
|
Term
|
Definition
| The speed of light (c)=frequency (v) times wavelenght (λ) |
|
|
