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asdf science
science vocab
| Question | Answer |
|---|---|
| What does Law of Conservation mean? | The law stating that in a chemical reaction, matter is neither gained nor lost. |
| What does Physical Change mean? | A change from one state (solid or liquid or gas) to another without a change in chemical composition |
| What does Chemical Change mean? | Any process determined by the atomic and molecular composition and structure of the substances involved |
| What does Element mean? | A Substance that cannot be broken down into simpler substances. |
| What does Chemical Formula mean? | An expression which states the number and type of atoms present in a molecule of a substance. |
| What does Element(Diatomic) molecule mean? | The smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms; a group of like or different atoms held together by chemical forces. |
| What does Compound Molecule mean? | A compound regarded as a union of molecules retaining their identities |
| What does Chemical Change mean? | A representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product |
| What does Chemical Reaction mean? | Process in which one or more substances are changed into others |
| What does Reactant mean?(In a chemical equation) | A substance that participates in a chemical reaction, especially a substance that is present at the start of the reaction |
| What does Products mean?(In a chemical equation) | A product is a substance that is formed as the result of a chemical reaction. |
| What does Coefficient mean?(In a chemical equation | The number of molecules of reactants or products. |
| What does Subscript mean?(In a chemical equation) | Indicate the ratio of elements |
| What does Diatomic Molecule mean? | A molecule that contains two atoms. |
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