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Dr. H Atom-Molecule
Dr. Heiny: (Standard 01) Atomic Structure
Question | Answer |
---|---|
Atom | The smallest sample of an element that has all the element's chemical properties. Atoms are electrically neutral because they have the same number of protons and electrons. |
Compound | a substance made of two or more kinds of atoms that are chemically combined |
Electron | A negatively charged subatomic particle that is usually found moving very fast through the empty space around the nucleus of an atom; an effective charge of negative one. |
Proton | The positively charged subatomic particle found in the nucleus of the atom; has a mass of 1 atomic mass unit (amu). |
Neutron | the electrically neutral subatomic particle found in the nucleus |
Nucleus | An extremely small and dense center of an atom where the protons and neutrons are located. |
Isotope | Atoms of one kind of element that have differing numbers of neutrons but identical number of protons. |
Element | A substance that contains one type of atom and cannot be broken down by simple means. |