Chemical Bonds
A compound held together by opposite electrical charges due to transferring electrons is a(n) ________ compound.
What is ionic?
The study of matter and the changes it experiences.
What is chemistry?
A change in a substance that does not change its chemical makeup, only its appearance or observable features.
What is a physical change?
Carbohydrates, lipids, proteins, and nucleotides are all
What are organic compounds or macromolecules?
The speed of moving particles is measured by
What is temperature?
Covalent compounds form when atoms ________ electrons.
What is share?
motion caused by the collisions between particles in fluids
What is Brownian motion?
A change in a substance in which the chemical properties change, making it a new substance.
What is a chemical change?
The main purpose of carbohydrates for living things is for
What is fuel or energy?
the tendency of energy to spread out
What is entropy?
The attraction of one water molecule for another is known as
What is cohesion?
the smallest individual part of an element
What is an atom?
running a tree branch through a wood chipper and ice on a pond melting are examples of
What are physical changes?
These organic compounds are nonpolar and function to store long-term energy; examples include fats, oils, and waxes.
What are lipids?
Because water molecules have regions of partial opposite charges, they are considered ________ molecules.
What is polar?
Organic compounds all contain the element
What is carbon?
a pure substance made of only one kind of atom
What is an element?
gasoline powering a car’s engine and a carton of milk turning sour are examples of
What are chemical changes?
When a peptide bond forms between two amino acids, ________ is released as a product of hydrolysis.
What is water?
Substances used to speed up chemical reactions without becoming part of the product
What are catalysts?
What are it forms chains/rings, it can bond with itself, and it can form up to 4 bonds?
a pure substance made of two or more chemically combined elements
What is a compound?
Sodium and chlorine chemically combine to form sodium chloride (table salt). Identify the reactant(s) and product(s) in this reaction.
What are the sodium and chlorine are the reactants and the table salt (sodium chloride) is the product?
These macromolecules make up muscle, which are polymers made of amino acids that form complex shapes.
What are proteins?
An inhibitor can decrease the activity of an enzyme by binding to the enzyme’s
What is active site?