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Chemistry
Vocabulary
Term | Definition |
---|---|
Atom | Smallest piece of mater that has the same properties of the element it is in. |
Proton | A positive subatomic particle in the atom's nucleus. Is the the identity of the element and the atomic number. |
Neutron | A neutral subatomic particle in the atom's nucleus...has no charge and most of the mass. |
Electron | A negative subatomic particle spinning outside the nucleus of an atom. Tiny! |
Element | The simplest forms of matter that contain only one type of atom. |
Periodic-Table-of-Elements | A charts that organizes all elements by atomic number and 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 | 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. |
Ductillity | Metals can be stretched and drawn into wires. |
Conductility | Metal can be conduct or carry electricity. Metal can conduct or carry heat to cook food. |
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. NaCl=salt |
Chemical Formula | A shorthand way to use chemical symbols and numbers to represent a substance. |
Chemical Equation | Uses symbols to show the relationship between the reactants and the product. |
Subscript | Small number to the right of the element that shows how many atoms there are of the element. |
Coefficient | The large atom that multiplies atoms of the element. |
Molecule | 2 or more atoms joined in a definite ratio. Keeps phys. & chem. properties. |
Diatomic Molecule | A molecule made of two atoms of the same element-(ex. 2 oxygen atoms) |
Synthesis Reaction | When two or more substances combine to create one new compound. |
Decomposition Reaction | A reaction where a single compound breaks down to form two similar substances. |
Single-Displacement Reaction | One element replaces another element in a compound leaving a new compound and one element. |
Double Displacement Reaction | The two metal ions in two compounds switch places in a chemical reaction. |
Indicator | Will change colors in the presence of an acid or base. |