Nature of Matter
Protons and neutrons have what kind of mass?
What is the same mass
What is a hydrogen bond?
An atom with a positive charge and another with a negative charge
what is the definition of monomer?
Small unit
What is a chemical reaction?
The process that changes or transfers one set of chemicals to another.
What is an atom?
Basic unit of matter
what are two types of bonds that hold the compound together?
Ionic and covalent
What is cohesion?
An attraction between molecules of the same substance.
How many amino acids are there?
21
How do enzymes do their jobs?
For a chemical reaction to take place the reactants must collide with enough energy
Where is the nucleus located at?
the middle of the atom
What is a chemical compound?
Chemical substance composed of many identical molecules
How does waters polarity influence its properties as solvent?
Waters polarity give it the ability to dissolve both ionic compounds and other polar molecules
How many groups of macromolecules are there?
4
What is activation energy ?
Energy that is needed to get a reaction to get started
Living things use what as their main source of what
Energy
What is the definition of ionic bond?
It is formed when one or more electrons are transferred from one atom to another
What is the definition of solute
Substance that is dissolved
Each nucleotide has a ___-carbon sugar
5
What role do enzymes play in living things?
They break things down
energy
What is an electron?
Negatively charged particle with only 1/1840 mass of proton
What does the pH scale indicate?
It shows the concentration of H+ ions in solutions
What’s the ratio of a carbohydrate
1:2:1
What are many enzymes effected by ?
Changes in temperature
water molecules sometimes split apart from...
Ions