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Science vocabulary
Term | Definition |
---|---|
Atom | smallest piece of matter that has the same properties of the element it is in |
Proton | A positive subatomic particle in the atoms nucleus the identity of the element & atomic number |
Neutron | A neutral subatomic Particle in the atoms nucleus has no charg & most of the mass |
electron | A negative subatomic particle spinning outside the nucleus of an atom |
element | The simplest forms of matter that contain only one type of atom |
Periodic table of elements | A chart that organizes all the elements by atomic number & properties |
Valence electron | The electron in the outer level of an atom that causes atoms to bond together |
Chemical Bond | An interaction that holds 2 atoms together |
Chemical bonding | The joining of atoms to form new substances |
Ionic Bond | is formed when electrons are transferred from one atom to another atom |
ion | Charged particle or atom that gained or lost electrons |
Crystal lattice | repeating 3 dimensional pattern that forms when ions bond |
Covalent bond | the type of bond that forms when atoms share electrons instead of transferring them |
metallic bond | A special bond between metal ions and the electrons that swim around them |
Malleability | metals can be pounded into thin sheets |
ductility | Metals can be stretched & drawn into wires |
Conductivity | metal can conduct electricity & heat |
Electron dot diagram | An easy way to show the valence electrons in an atom or chemical bond |
Compound | A set of elements that are chemically bonded & changed into new substances |