Term
|
Definition
A concise statement that summarizes the results of many observations and experiments |
|
|
Term
|
Definition
A mixture in which the composition is uniform throughout |
|
|
Term
|
Definition
A mixture which composition is not uniform throughout |
|
|
Term
|
Definition
A physical blend of two or more components |
|
|
Term
|
Definition
A proposed explanation for an observation |
|
|
Term
|
Definition
A substance present at the start of a reaction |
|
|
Term
|
Definition
A substance produced in a reaction |
|
|
Term
|
Definition
A substance that increases the rate of reaction by lowering the activation-energy barrier; the catalyst is not used up in the reaction |
|
|
Term
|
Definition
Groups of 3 elements with similar properties |
|
|
Term
|
Definition
Is a substance that contains two or more elements chemically combined in fixed proportion |
|
|
Term
|
Definition
Is the ratio of the density of a given solid or liquid substance to the density of water at a specific temperature and pressure |
|
|
Term
|
Definition
Is the ratio of the mass of an object to its volume |
|
|
Term
|
Definition
Is the simplest form of matter that has a unique set of properties |
|
|
Term
|
Definition
Matter that has a uniform and definite composition |
|
|
Term
|
Definition
States that equal volumes of gases measured at the same temperature and pressure contain the same numbers of particles |
|
|
Term
The law of definite proportion |
|
Definition
states that in samples of any chemical compound, the masses of the elements are always in the same proportions |
|
|
Term
Responding or dependent variable |
|
Definition
The variable that is observed during the experiment |
|
|
Term
Manipulated or independent variable |
|
Definition
The variable that you change in an experiment |
|
|
Term
|
Definition
The zero point of the kelvin scale is 0k |
|
|
Term
|
Definition
Well-tested explanation for a broad set of observations |
|
|
Term
|
Definition
When elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties |
|
|
Term
The law of multiple proportions |
|
Definition
whenever the same two elements form more than |
|
|