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chemistry
| Term | Definition |
|---|---|
| ATOM | smallest piece of matter that has the same properties an element it is in. |
| PROTON | a positive subatomic particle in the atoms nucleus. is the identity of the element atomic number. |
| NEUTRON | A neutral subatomic particle in the atoms nucleus... has no charge and most of the mass. |
| ELECTRON | a negative subatomic particle spinning outside the nucleus of an atom. tiney |
| 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 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 togeter |
| CHEMICAL BONDING | The joining of atoms to form new substances. |
| IONIC BOND | is formed when electrons are transferred from one atom to another. |
| ION | changed particles or atom gained or lost electrons. |
| CRYSTAL LATTICE | repeating 3 dimensional pattern that forms when ions bond. |
| COVENANT BOND | the type of bond that forms when atoms share electrons instead of transferring them |
| METALLIC BOND | a special bond between metal ions and electrons that swim around them. |
| DUCTILITY | metals can be stretched into wires |
| CONDUCTIVITY | metal can conduct or carry electricity through wires.metal can conduct or carry heat in order to cook food |
| ELECTRON DOT DIAGRAM | an easy way to show valence electrons in an atom or chemical bond. |
| COMPOUND | a set of elements that are chemically changed and bonded into new substances NaCI=salt |
| Chemical Formula | A short way to use chemical symbols and numbers to represent a substance (h2o) |
| Chemical equation | use symbols to show the relationship between the reactions and products c+02->c02 |
| subscript | (h2o) - small number to the right of the element that shows how many atoms there are in a element. |
| coefficient | the large number that multiplies the atoms of elements. |
| Molecule | 2 or more atoms joined together in a defint ratio keeps phys and chem properties |
| Diatomic molecule | A molecule made of 2 atoms of the same element ex 2 oxgyn atoms |
| Reactant | A subtance that forms as a result of a chemical reaction |
| Product | The subtance that forms as a result of a chemical reaction |
| Laws of conservation of mass | States that had matter is neither destryed in a chemical reaction |
| 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 2 simpler substances |
| single displacement reaction | one element replaces another element in a compound leaving a new compound and 1 element. |
| dubble displacement reaction | the 2 metal ions in 2 compounds switch place in a chemical reaction |
| indicator | will change colors in the presence of an acid or abase |
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