Chapter 14 lesson 1 Crossword
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
 
 
Down: 1) the smallest unit of an element2) have a negative charge3) dull luster and poor conductors of heat and electricity4) a substance made up of different elements that are chemically joined5) atoms that have the same number of protons but a different number of nuetrons6) atoms that have more or fewer electrons than they have protons. these can have a positive or negative charge.7) developed the periodic table which is where elements are organized according to their atomic number8) elements are aranged in this important tool12) a dense central core of an atom containing protons and neutrons13) conduct heat and electricity more poorly than metals but better than non-metals16) a pure substance that is made up of a single kind of atom. this cannot be broken down into other substances Across: 8) has a positive charge9) these are the building blocks of an atom10) consists of a nucleus surrounded by moving electrons11) negatively charged particles outside the nucleus of an atom14) a strong attraction between two atoms that holds them together to form molecules15) the number of protons int he nucleus of an atom17) is the smallest unit of a compound that still has all of its characteristics18) shiny, conduct electricity, and conduct heat very well
 

 

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