Chapter 2 Vocab Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Term | Definition |
atom | the smallest basic unit of matter |
element | one particular type of atom, and it cannot be broken down into a simpler substance by ordinary chemical means |
compound | a substance made of atoms of different elements bounded together in a certain ratio |
ion | an atom that has gained or lost one or more electrons |
iconic bond | a bond that forms through the electrical force between oppositely charged ions |
covalent bond | a bond that forms when atoms share a pair of electrons |
molecule | two or more atoms held together by covalent bonds |
hydrogen bond | an attraction between a slightly positive hydrogen atom and a slightly negative atom, often oxygen or nitrogen |
cohesion | the attraction among molecules of a substance |
adhesion | the attraction among molecules of different substances |
solution | a mixture of substances that is the same throughout - it is a homogeneous mixture |
solvent | the substance that dissolves another substance |
solute | a substance that dissolves in a solvent |
acid | a compound that releases a proton - a hydrogen ion(H+) - when it dissolves in water |
bases | compounds that remove H+ ions from a solution |
pH | the scale that measures a solution's acidity, or concentration |
monomer | each subunit in the complete molecule |
polymer | a large molecule, or macromolecule, made of many monomers bonded together |
carbohydrates | molecules composed of carbon, hydrogen, and oxygen, and they include sugars and starches |
lipids | nonpolar molecules that indlude fats, oils, and cholestrol |
fatty acids | chains of carbon atoms bonded to hydrogen atoms |
protein | a polymer made of monomers called amino acids |
amino acids | molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur |
nucleic acids | polymers that are made up of monomers called nucleotides |
chemical reactions | reactions that change substances into different substances by breaking and forming chemical bonds |
reactants | the substances changed during a chemical reaction |
products | the substances made by a chemical reaction |
bond energy | the amount of energy that will break bonds in molecules of oxygen and glucose |
equilibrium | what is reached when both the reactants are made at the same rate |
activation energy | the amount of energy that needs to be absorbed for a chemical reaction to start |
exothermic | term used to describe a chemical reaction that releases more energy than it absorbs |
endothermic | term used to describe a chemical reaction that absorbs more energy than it releases |
catalyst | a substance that decreases the activation energy needed to start a chemical reaction and, as a result, also increases the the rate of the chemical reaction |
enzymes | catalysts for chemical reactions in living things |
substrates | the specific reactants that an enzyme acts on |
Created by:
KowitzE21
Popular Biology sets