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Science Vocab
------- BY ALEX MUFFLER ------- Dethloff 6th Period
| Word | Definition |
|---|---|
| Law of Conservation of Mass | States that mass is neither created nor destroyed in any ordinary chemical reaction. |
| Physical Change | Changes affecting the form of a substance, but do not change the chemical composition. |
| Chemical Change | When a substance combines with another to form a new substance. |
| Element | A substance that cannot be broken down by chemical means. |
| Chemical Formula | A representation of a substance using the symbols of the elements. |
| Element (Diatomic) Molecule | Elements that are found with two atoms that are bonded together. |
| Compound Molecule | Electrically neutral group of two or more atoms held together by chemical bonds. |
| Chemical Equation | Written form of a chemical reaction. Reactant is on the left and product is on the right. |
| Chemical Reaction | Process that involves rearrangement of the molecular or ionic structure of a substance. |
| Reactant | A substance that takes part in and undergoes change during a reaction. |
| Product | A substance that is formed as the result of a chemical reaction. |
| Coefficiant | A numerical measure of a property that is constant under specified conditions. |
| Subscript | A letter, figure, or symbol written below the line. |
| Ionic Compound | A chemical compound in which ions are held together in a structure by ionic bonds. |
| Covalent Compound | A form of chemical bonding by the sharing of pairs of electrons between atoms. |
| Metallic Compound | A compound that contains one or more metal elements. |
| Synthesis | Making a complex substance by combining chemicals, especially with chemical reactions. |
| Decomposition | The separation of a substance into simpler substances or basic elements. |
| Single Replacement | A chemical reaction when an element or ion moves out of one compound and into another. |
| Double Replacement | A chemical process involving the exchange of bonds between two reacting chemicals. |