1
Newtworks of interdependent components and processes.
What is a system?
Combination of two or more atoms.
What is a molecule?
The double helix of genetic material that determines heredity.
What is deoxyribonucleic acid, or DNA?
A substance that can not be broken into simpler units by chemical means.
What is an element?
A system in a stable balance.
What is equilibrium?
A substance that has a pH value of 1.
What is hydrochloric acid?
A system that exchanges energy and matter with its environment.
What is an open system?
A system in which there is no exchange of energy or matter with its surroundings.
What is a closed system?
A value that indicates the acidity or alkalinity of a solution on a scale of 0 to 14 based on the proportion of H+ ions present.
What is pH?
Minute compartments surrounded by semipermeable membranes within which the processes of life are carried out by all living organisms.
What is a cell?
In any chemical reaction, matter changes form, but it is neither created nor destroyed.
What is conservation of matter?
The smallest particle that exhibits the characteristics of an element.
What is an atom?
The flow of energy and or matter into and out of a system.
What is throughput?
Anything that takes up space and has mass.
What is matter?
The pH of bleach.
What is 13?
Substances that readily bond with hydrogen ions in an aqueous solution.
What are bases?
The characteristic number of protons per atom of an element.
What is the atomic number?
The pH value for pure water.
What is 7?
A signal or factor that tends to increase a component or process.
What is a positive feedback loop?
A substance composed of different kinds of atoms.
What is a compound?
Substances that release hydrogen ions in water.
What is an acid?
The pH for a soft drink.
What is 3?
A signal or factor that tends to decrease a process or component.
What is negative feedback loop?
A form of a single element that differs in atomic mass due to a different number of neutrons in the nucleus.
What is an isotope?
Complex organized around skeletons of carbon atoms arranged in rings or chains; include biomolecules, molecules synthesized by living organisms.
What are organic compounds?