(Q).
Q: What is the simplest unit that has the fundamental chemical properties of an element? Choices: - neutron - nucleus - cell - atom A:
(A).
atom

(Q).
Q: What bonds form because they give atoms a more stable arrangement of electrons? Choices: - Hydrogen bond - Ionic bond - Polar bond - covalent A:
(A).
covalent

(Q).
Q: What system disorders include kidney stones, kidney failure, and urinary tract infections? Choices: - nervous system - digestive system - renal system - urinary system A:
(A).
urinary system