the pH
A substance that reduces the hydrogen ion concentration of a solution
What is a base?
the transfer of an electron between atoms results in attraction
What is an ionic bond
the most abundant compound on the surface of earth
What is H2O or water?
the shape of something
What is structure?
recorded observations
What is data?
describes how acid or basic a solution is
What is a pH scale
when electrons are not transferred between atoms but are shared
What is a covalent bond?
common name for sodium chloride or NaCl
What is table salt?
the author of "On the Origins of Species by Means of Natural Selection"
Who is Darwin?
a proposed explanation for a set of observations
What is hypothesis?
biological fluids that contain substances that minimize change in pH
What is a buffer?
this can only make one bond
What is hydrogen?
a vital trace mineral for energy processing and transportation of oxygen in the blood
What is Iron?
movement, growth, reproduction, regulation and most cellular processes require this
What is energy?
is supported with evidence and has not be contradicted by science
What is theory?
pH of pure water
What is neutral?
when two atoms differ in electronegativity they form this bond
What is a polar covalent bond?
anything that occupies space and has mass
What is matter?
the scientific explanation of diversity
What is evolution?
scientific test under controlled conditions
What is an experiment?
a substance that donates hydrogen ions to solutions
What is an acid?
are the breaking of existing bond and formation of new bonds
What are chemical reactions
the smallest unit of matter that still retains the properties of an element
What is an atom?
the breeding of pets, livestock or crops
What is artificial selection?
the factor in research that is manipulated
What is an independent variable?