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Science Unit 2 Vocab

Science Unit 2 Vocabuary 7th Grade

TermDefinition
Atom The smallest particle of an element. The building blocks of matter.
ATP Energy that is produced in cells. ATP is short for aderosine triphosphere.
Cellular Respiration The process of metabolism in which cells obtain energy in the form of ATP by causing glucose and other food molecules to react with oxygen.
Chemical Equation A chemical equation is a written representation of the process that occurs in a chemical reaction.
Chemical Formula It tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are each element in the form of subscriptions.
Chemical Reaction Reactions in which chemical bonds are formed or broken and one or more substances change into entirely new substances with different properties.
Chemistry The scientific study of matter the structure properties and reactions of the atoms and the compounds they form.
Chloroplast One of the organelles in a plant cell that contains chloraphill and is the place where photosynthesis.
Coefficient The numbers placed before the reactants in a chemical equation so that the number of atoms in the products are equal to the number of atoms in the reactants on the left side.
Compound atoms of more than one element that chemically join together. Water is a compound.
Electron Subatomic particles that are negatively charged and orbit the nucleus of the atom.
Element A substance that contains only one kind of atom.
Law of Conservation of Mass The Law of Conservation of Mass states that the total number of atoms is the same before and after a chemical reaction occurs.
Mitochondria An organelle in animals cells where APT is produced.
Mixture A combination of two or more substances that are not chemically joined and can be physically separated.
Neutron Subatomic particles that have no charge and are located in the nucleus.
Periodic Table A table that organizes the elements by their atomic number and chemical properties.
Photosynthesis The process by which a green plant turns water and carbon dioxide into food when the plant is exposed.
Product A product is a substance that is formed as the result of a chemical reaction.
Proton Subatomic particles that are positively charged and are located in the nucleus.
Reactant Starting materials in a chemical reaction that will interact together.
Solution A homogenous mixture of two or more substances which may be solids, liquids, gases, or a combination of these.
Subatomic Particles Parts of an atom.
Subscript Subscripts in a chemical equasion is the number of the lower right hand site of a chemical element.
Created by: Cooper L