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Science Vocab
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Question | Answer |
---|---|
Law of Conservation of mass | Molecules can not be created or destroyed; they are only changed |
Physical Change | Changes that affect the form of a substance |
Chemical change | When two substances combine to form a new substances |
Element | A pure substance consisting of one type of atom. |
Chemical formula | Information about the atoms that constitute a particular chemical compound |
Element molecule | When two or more molecules combine chemically of only on type of element |
Compound Molecule | A molecular compound made of molecules - not ions. The atoms in the compound are bound together by shared electrons |
Chemical Equation | short, hard form for writing what reactants are used and what products are formed in chemical reaction |
Chemical Reaction | process that produces chemical changes resulting into a new substance and new features |
Reactants (In chemical equation) | a substance in a chemical that goes through a chemical change |
Products (In chemical equation) | substance that results from a chemical change |
Coefficient (In a chemical equation) | tells how much a certain substance is in the reaction |
Subscript (In a chemical equation) | tells you how many atoms of an element are in the equation |
Diatomic Molecule | molecules composed only of two atoms, of either the same or different chemical elements. |