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atoms study guide

help you remember atoms and molecules

QuestionAnswer
bonding that happens when atoms share pairs of electrons cpvalent bond
substance with only one kind if atom element
classification system of elements periodic table of elements
an atom that gains or loses electrons an ion
smallest piece of an element an atom
atom smashing machine particle accelerator
a group of atoms joined together chemically molecules
What is chemistry the study of? Matter
the atomic mass is the approximate number of what? protons and nuetrons
Electrons travel around the nucleus of the atom in a space called a what? A shell!
the atomic number is based on the number of what an elements have? protons
Who is the Russian chemist who is responsible for developing a way to organize elements? Mendeleev
What theory is what scientist think about atoms? atomic theory
What makes it easier for scientist all over the world to communicate about atoms? chemical symbols
The combination of gases hydrogen and oxygen form the compund what? Water
in the periodic table of elements, the name of the element, its chemical symbol, and its what kind of number can be found? stomic number
Compound are molecules,but molecules are not always what? Compounds
Why do scientist use chemical symbols? It is quicker and easier to write.
Created by: Shanetta