What atom has only one proton?
a. hydrogen
b. an isotope
c. a free radical
d. a radioisotope
Give this one a try later!
hydrogen
Organisms require ____ and ____ to maintain themselves, grow, and reproduce.
Give this one a try later!
energy; nutrients
,Rank the following chemical bonds in order of increasing polarity.
a. non polar covalent
b. ionic
c. polar covalent
Give this one a try later!
a, b, c
_____ is the transmission of DNA to offspring.
a. reproduction
b. development
c. homeostasis
d. inheritance
Give this one a try later!
inheritance
A testable explanation for a natural phenomenon is a(n) _____.
a. conclusive description
b. model
c. hypothesis
d. experiment
e. prediction
Give this one a try later!
, hypothesis
A carbon atom has how many electron vacancies?
a. two
b. three
c. five
d. four
e. six
Give this one a try later!
four
A(n) _____ can help keep the pH of a solution stable.
a. covalent bond
b. hydrogen bond
c. buffer
d. free radicals
Give this one a try later!
buffer
A covalent bond in which electrons are not shared equally
Give this one a try later!
a. hydrogen
b. an isotope
c. a free radical
d. a radioisotope
Give this one a try later!
hydrogen
Organisms require ____ and ____ to maintain themselves, grow, and reproduce.
Give this one a try later!
energy; nutrients
,Rank the following chemical bonds in order of increasing polarity.
a. non polar covalent
b. ionic
c. polar covalent
Give this one a try later!
a, b, c
_____ is the transmission of DNA to offspring.
a. reproduction
b. development
c. homeostasis
d. inheritance
Give this one a try later!
inheritance
A testable explanation for a natural phenomenon is a(n) _____.
a. conclusive description
b. model
c. hypothesis
d. experiment
e. prediction
Give this one a try later!
, hypothesis
A carbon atom has how many electron vacancies?
a. two
b. three
c. five
d. four
e. six
Give this one a try later!
four
A(n) _____ can help keep the pH of a solution stable.
a. covalent bond
b. hydrogen bond
c. buffer
d. free radicals
Give this one a try later!
buffer
A covalent bond in which electrons are not shared equally
Give this one a try later!
