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Science vocab

QuestionAnswer
Law of Conservative of Mass the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction
Physical change Although some extensive properties (like shape, phase, etc.) of the material change, the material itself is the same before and after the change. The change can be “undone".
Chemical change The substances present at the beginning of the change are not present at the end; new substances are formed. The change cannot be “undone".
Element Substance that cant be broken down into simpler substances.
Chemical formula a representation of a substance using symbols for its constituent elements.
Element (Diatomic) Molecule are molecules composed of two of the same element.
Compound Molecule Compounds are groups of two or more elements that are bonded together.
Chemical Equation A symbolic representation of what happens when chemicals come in contact with one another.
Chemical Reaction A process in which one or more substances are chemically changed into one or more new substances (products).
Reactants any substance that undergoes a chemical change.
Products a product is a substance that is formed as the result of a chemical reaction.
Coefficient The number in front of the variable.
Subscript A subscript is the number that is written below the element that lets you know how many molecules of that element are present
Created by: b0503848
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