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