2.1 Matter is the stuff of the universe & energy moves matter
Forms of Energy
Chemical, Electrical, Mechanical, Radiant/Electromagnetic radiation
Electrical energy
Energy formed by the movement of charged particles
characteristics of solids
Have definite shape & volume
characteristics of liquids
Have definite volume, but conform to the shape of their container.
characteristics of gases
Have neither shape nor a definite volume.
Energy can be measured by
Its effects on matter.
Energy exists in 2 states:
Kinetic & potential
Kinetic energy
The energy of motion or movement
matter
anything that occupies space & has mass, the "stuff" of the universe.
ATP (Adenosine triphosphate)
chemical energy used to run almost all functional processes.
electromagnetic spectrum
collective energy waves
nerve impulses
electrical currents used by the nervous system to transmit messages from one part of the body to another.
All living things require this to grow & function
energy
Cannot be created nor destroyed
energy
Chemical energy
energy stored in the bonds of chemical substances
radiant energy/electromagnetic radiation
energy that travels in waves, emitted photons of energy
mass
equal to the actual amount of matter in the object & remains constant wherever the object is.
All energy conversions in the body liberate
heat
All living things are composed of...
matter
states of matter
solid, liquid & gas
Potential energy
stored energy that is inactive energy that has the capability to do work but is not presently doing so.
science of chemistry
studies the nature of matter, especially how its building blocks are put together & interact.
Energy
the capacity to do work, or to put matter into motion.
mechanical energy
the energy directly involved in moving matter
weight
varies with gravity