Chapter 2 Flashcards
________ is anything that occupies space and has mass
Matter
Molecules are made up of particles called _________?
Atoms
Positively charged particles within a nucleus of an atom are called ?
Protons
Electrons inhabit regions of the atoms called _______ levels.
Energy levels
Substances with molecules having more than one kind of atom are called
Compound
The symbol K+ represents the potassium _______
Atom
A compound that dissociates in water to form ions is called an ______
Electron
Molecules that have a carbon-carbon bond in them are classified as
Covalent bonds
In salt water salt is the solute and water is the _______?
Solvent
When water is used to build up small molecules into larger molecules the process is called _______?
Dehydration synthesis
_______ are solutions that have an excess of hydrogen ions.
Acids
The blood contains chemicals called ________ that maintain a stable pH.
Buffers
An ion is formed when:
Electrons are gained or lost
In the equation H2O+ CO2 —> H+ HCO3 which of the compounds is a reactant?
CO2 (Reactant is on the left side of the arrow)
Product is on the right side of arrow
Which of these values represents an acid?
a. pH 7.5
b. pH 6.1
c. pH 9.0
d. pH 7.0
B
