Building blocks of matter; contains subatomic particles- neutrons, protons, and electrons
What is AN ATOM
100
Substance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.
What is A PRODUCT
100
Substance that releases hydrogen ions when dissolved in water. pH less than 7
What is AN ACID
100
Large molecule formed by joining smaller organic molecules together
What is A MACROMOLECULE
100
Type of chemical bond formed when atoms share electrons
What is A COVALENT BOND
200
Pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means.
What is AN ELEMENT
200
Substance that exists before a chemical reaction starts; located on the left side of the arrow in a chemical equation
What is A REACTANT
200
Substance that releases hydroxide ions when dissolved in water; pH greater than 7
What is A BASE
200
Building blocks of proteins, always have a central carbon atom.
What is AN AMINO ACID
200
Electrical attraction between to oppositely charged or groups of atoms.
What is AN IONIC BOND
300
Contains neutrons and protons
What is A NUCLEUS
300
Protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction
What is AN ENZYME
300
Measure of the concentration of hydrogen ions in a solution
What is pH
300
Subunit of nucleic acid formed from a simple sugar, phosphate group, and a nitrogenous base
What is A NUCLEOTIDE
300
Compound whose atoms are held together by covalent bonds
What is A MOLECULE
400
Positively charged particle in an atom's nucleus
What is PROTON
400
Substance that speeds up a chemical reaction by reducing the activation energy.
What is A CATALYST
400
Combination of two or more different substances in which each substance keeps its individual characteristic; can have a uniform composition or have distinct areas of substances
What is A MIXTURE
400
Complex macromolecule that stores and communicates genetic information
What is A NUCLEIC ACID
400
Two or more atoms of the same element having different numbers of neutrons
What is ISOTOPE
500
Atom that is negatively or positively charged because it has lost or gained one or more electrons.
What is AN ION
500
Minimum amount of energy needed for reactants to form products in a chemical reaction.
What is THE ACTIVATION ENERGY
500
Homogeneous mixture formed when a substance is dissolved in another substance
What is SOLUTION
500
Organic compound made of amino acids joined by peptide bonds; primary building block or organisms
What is A PROTEIN
500
Mixture that can react with an acid or a base to maintain pH within a specific range.