MAP Ch. 2: Basic Chemistry
If an atom has 10 electrons in its valence shell, how will it interact with atoms of a different element?
It will give away 2 valence electrons to other atoms.
A compound is defined as __________.
a molecule composed of two or more elements
Which statement best describes energy?
it does not have mass or occupy space
What is the main type of lipid found in cellular membranes?
phospholipids
What subatomic particle or particles have a mass of 1, a charge of +1, and are located in the nucleus of an atom?
proton
Which of these is an example of kinetic energy?
skeletal muscles contracting as a person lifts weights
What occurs when acid is added to a solution with a pH of 7?
the pH drops below 7
What is the number of neutrons in an atom with atomic mass of 35, three energy levels, and 7 valence electrons?
18
Which of these statements best describes an element?
An element is composed of identical atoms.
What is the most accurate description of C6H12O6?
C6H12O6 is a compound.
What organic molecule provides an immediate source of chemical energy within all cells?
adenosine triphosphate
Choose the best description for the term molecule.
two or more atoms combined chemically
Which nitrogen-containing base is found only in RNA?
uracil