What is the building blocks of matter
(Matter is anything that has mass and takes up space.)
100
electrons
What is located outside the nucleus and are negatively charged?
100
Molecule
What is a compound in which the atoms are held together by covalent bonds
100
products
What are substances formed during the chemical reaction, found on the right side of the arrow in a chemical equation?
matter cannot be destroyed or made (Law of conservation of mass)
Chemical equations must show balance of mass.
100
active site
What are the specific locations where a substrate binds on an enzyme (fits like a puzzle piece)
200
neutrons and protons
What is located at the center of the atom?
200
Element
What is a pure substance that cannot be broken down into other substances by physical or chemical means?
Made up of only one type of atom
on the periodic table
200
ion
What is an atom that has lost or gained one or more electrons? It carries an electric charge
200
activation energy
What is the minimum(least) amount of energy needed for reactants to form products in a chemical reaction?
200
Polar Molecules
What are molecules that have an unequal distribution of charges, meaning they have oppositely charged regions
300
Nucleus
What is the center of the atom?
300
isotope
What are atoms of the same element that have different numbers of neutrons?
300
chemical reaction
What is the process by which atoms or groups of atoms in substances are reorganized into different substances
Chemical bonds are broken and formed during chemical reactions
300
catalyst
What is a substance that lowers the activation energy needed to start a chemical reaction. Speeds it. Does not increase amount of product. Does not get used up in the reaction.
300
hydrogen bond
What is a weak interaction involving a hydrogen atom and a fluorine, oxygen, or nitrogen atom.
400
Protons
What is positively charged particles in nucleus of atom?
400
compound
What is a pure substance formed when two or more different elements combine?
Millions of them
each has a chemical formula made up of the chemical symbols of the periodic table
400
enzymes
What are the special proteins that arebiological catalysts that speedup the rate of chemical reactions in biological process.
Essential to life. Not used up by the chemical reaction. Can be used again. EX: amylase an enzyme in saliva
400
mixture
What is a combination of two or more substances in which each substance retains its individual characteristics and properties (like a salad: lettuce, tomatoes, cucumbers)
500
Neutrons
What is in the nucleus of an atom with no charge; not positive or negative?
500
covalent bond
What is a chemical bond that forms when electrons are shared?
500
reactant
What is the starting substance on the left side of the arrow in a chemical equation?
500
substrates
What are the reactants that bind to the enzyme; fit like a puzzle piece.
500
Solution
What is the substance in which another substance is dissolved?