atoms molecules and the elements Berg

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Atoms, Molecules, and the Elements:

Atoms, Molecules, and the Elements A Science Unit for Mrs. Berg’s Class

atom :

atom 1.   The basic building block of matter. 2.   The smallest component of an element having the chemical properties of the element.

chemical formula  :

chemical formula   noun     A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound. ex. Al2(SO4)3

compound  :

compound   noun,verb,adjective     A substance made up of two or more elements chemically joined together into a molecule. NaCl = salt

electron :

electron noun     particle in an atom that has a negative electrical charge

element:

element noun     A substance whose atoms are all alike. There are over 100 elements on the Periodic Table.

gas:

gas noun,verb     One of the three states of matter. This state of matter has no fixed shape and no fixed volume.

 heterogeneous:

  heterogeneous adjective     These types of mixtures contain more than one substance evenly mixed but not chemically bonded together and is the same throughout.

homogeneous :

homogeneous adjective     When two or more substacnes come together but don't chemically combine or bond to make a new substance it is called this.

inorganic :

inorganic adjective       Any substance that does not contain carbon.

ion     :

ion     noun     a positively or negatively charged atom

liquid :

liquid noun,adjective     A state of matter that has no fixed shape but that has a definite volume.

matter :

matter noun,verb     Anything that takes up space and has mass.

molecule  :

molecule   noun     The smallest physical unit of a substance that can exist independently, consisting of one or more atoms held together by chemical forces.

neutron :

neutron noun     An elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus.  

nucleus:

nucleus 1.   The positively charged center of an atom. 2.   The nucleus is in the center of the atom

organic:

organic noun,adjective     Obtained from a living thing; Containing carbon

particles :

particles noun     Very small pieces of matter.

proton  :

proton   noun     A stable particle with positive charge equal to the negative charge of an electron.  

solid :

solid noun,adjective     A state of matter that has a definite shape and a definite volume.

solution  :

solution   noun     A homogeneous mixture that has dissolved substances.

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