Bio 1050 Study Guide Question with Verified
Correct Answers
element
smallest unit of matter something can be broken down into
atom
the smallest unit of matter that retains the properties of an element
what are elements made up of
atoms
4 elements that make up about 96% of living organisms
oxygen, carbon, hydrogen, nitrogen
compound
2 or more elements in a fixed ratio
Emergent Properties
properties that emerge when compounds are built
trace elements
A substance required by humans in small quantities, common additives to food and water
properties of trace elements
prevent disease, added to food to preserve it, make it look better, and make it more nutritious
what are atoms made up of
protons, neutrons, electrons
, where are protons and neutrons
nucleus
where are the electrons
orbit the nucleus, in the shell
what are the charges for protons, neutrons, and electrons
protons (+) neutrons (neutral) electrons (-)
atomic number
number of protons in the nucleus
atomic mass number
sum of the protons and neutrons
atomic mass
approximately equal to mass number
atomic weight
mass average of all isotopes in an element
isotopes
an element with the same number of protons but different number of neutrons
how do radioactive isotopes help us
useful tracers for monitoring the fate of atoms in living organisms
PiB
Correct Answers
element
smallest unit of matter something can be broken down into
atom
the smallest unit of matter that retains the properties of an element
what are elements made up of
atoms
4 elements that make up about 96% of living organisms
oxygen, carbon, hydrogen, nitrogen
compound
2 or more elements in a fixed ratio
Emergent Properties
properties that emerge when compounds are built
trace elements
A substance required by humans in small quantities, common additives to food and water
properties of trace elements
prevent disease, added to food to preserve it, make it look better, and make it more nutritious
what are atoms made up of
protons, neutrons, electrons
, where are protons and neutrons
nucleus
where are the electrons
orbit the nucleus, in the shell
what are the charges for protons, neutrons, and electrons
protons (+) neutrons (neutral) electrons (-)
atomic number
number of protons in the nucleus
atomic mass number
sum of the protons and neutrons
atomic mass
approximately equal to mass number
atomic weight
mass average of all isotopes in an element
isotopes
an element with the same number of protons but different number of neutrons
how do radioactive isotopes help us
useful tracers for monitoring the fate of atoms in living organisms
PiB
