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Chapter 2 Section 1 Terms

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
matter   anything that occupies space and has mass  
mass   the quantity of matter an object has  
element   substances that cannot be broken down chemically into simpler kinds of matter  
atom   the simplest particle of an element that retains all of the properties of that element  
nucleus   the central region of an atom  
proton   the number of protons in an atom  
neutron   is equal to the total number of protons and neutrons of an atom  
atomic number   small, negatively charged particles  
mass number   a three dimensional region around a nucleus that indicates the probable location of an electron  
electron   atoms of the same element that have a different number of neutrons  
orbital   a three dimensional region around a nucleus that indicates the probable location of an electron  
isotope   atoms of the same element that have a different number of neutrons  
compound   made up of atoms of two or more elements in fixed proportions  
chemical bond   the attractive forces that hold atoms together  
covalent bond   forms when two atoms share one or more pairs of electrons  
molecule   the simplest part of a substance that retains all of the properties of that substance and can exist in a free state  
ion   an atom or molecule with an electric charge  
ionic bond   a positive and negative attraction between two ions  


   






 
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