Water
What is the molecular formula for water?
H2O
Atoms bonded together. They can be the same type of atom (like O2), or different atoms (like H2O).
Molecule!
A pH of 7 would be considered...
Neutral
Does the amount of each element change in a chemical reaction.
No!!! We do not create matter. Atoms are just rearranged.
Amino acids are the monomer of what type of biomolecule?
Proteins
What are the three states of matter that water can exist as?
Solid (ice), liquid, and gas (water vapor)
Element!
The numbers on the pH scale go from ____ to ____.
0 to 14
An equation for a chemical reaction using an arrow like this is called....
Example: reactants --> products
Chemical Equation
Which two types of biomolecule store energy?
Carbohydrates and lipids.
What pH is regular water?
7
A molecule that contains at least two different types of atoms.
Compound!
Is the stomach acidic or basic? Why?
It is acidic because of stomach acid.
The materials you start with in a reaction are called...
Reactants! (the things you are reacting)
These biomolecules are made of nucleotides. They carry the instructions for living things (genes).
Nucleic Acids
This liquid is needed by all organisms as an important solvent for chemical reactions.
Water!
This specific type of compound is found inside living organisms.
Organic Compound!
pH above _____ would be considered basic. What is another word for basic?
Above 7. Alkaline is another word for basic.
This type of protein catalyzes reactions (gets them started).
Enzyme!
What type of biomolecule are enzymes?
Proteins!
This type of bond holds water molecules together. The oxygen of one water molecule is attracted to the hydrogen of another water molecule.
Hydrogen bonds
Organic compounds must contain this element.
Carbon! (C)
If something has a lower pH is it more acidic or more basic?
More acidic. The lower the pH, the more acidic something is.
Every reaction needs _______ energy to begin.
Activation