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atoms study guide
help you remember atoms and molecules
| Question | Answer |
|---|---|
| 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. |
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