Atoms, Ions, and molecules
This type of bond occurs when electrons are transferred
ionic
When making tea, you use tea bags and water. What is the solvent?
Water
How are monomers and polymers related?
A monomer is a part of a polymer.
What happens to energy in an exothermic reaction?
it is given off.
A catalyst (increases/decreases) the activation energy need to start a reaction.
decreases
An ion is formed when an atom gains or loses what
an electron
A substance has a pH of 2. What would it be classified as on the pH scale? ( is it strong or weak)
Strong Acid
Name the 2 types of nucleic acids
DNA and RNA
What is the term for the amount of energy that needs to be added for a chemical reaction to start?
Activation Energy
Describe how the interaction between an enzyme and its substrates change a chemical reaction.(2 things)
It lowers the activation energy and speeds up the reaction.
What is the formula for glucose?
C6 H12 O6
The pH scale goes from _______ to ________.
0-14
Which two biomolecules give us energy?
Carbohydrates and Lipids
6CO2 + 6H2O → C6H12O6+ 6O2. Identify the products in the equation.
C6H12O6 and O2
Enzymes are what type of biomolecule?
Protein
What charge does an element have if it loses an electron?
positive
Water is polar. Explain
It means that the molecule has a slight charge.
name the monomer for each biomolecule.
Lipids
proteins
Carbs
Nucleic Acids
True or False
Chemical reactions change substances into different substances by breaking and forming chemical bonds
True
Name 2 things that can cause an enzyme not to function properly.
temperature and pH
This is the type of bond formed when electrons are shared.
covalent
Name a substance for each category
Acid
Base
Neutral
Acid
base
neutral
Answers vary
The 4 macromolecules include:
Carbohydrates
Lipids
Proteins
Nucleic Acids
What does a double arrow indicate in a formula?
That equilibrium has been reached.
What is the specific reactant that an enzyme acts on?
substrate