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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. |