Page 9 - E-Science Prim.5 2025 U2. _Neat

Light and sound Experiment 5 We can’t
aren’t matters see by
but forms of eyes

energy.

• Any matter is made of millions of tiny particles

• Even small matters as germs or air are also made of tiny particles.

• These particles are in a continuous motion.

P.O.C Solid Liquid Gas
Particles

Space between Narrow (very close) More spaces A lot of spaces
particles Packed tightly
Arrangement Held more loosely aren’t held
of particles Regular pattern
Organized Random arrangemenRtandom arrangement
Particle’s
motion Limited “Vibrated” Not well organized Not organized at
Move a little bit.
Energy Can’t slide over all
Shape each other.
Less energy Intermediate Completely free
Volume Definite (fixed)
Has its own shape Move freely, faster Move very freely

Definite Can slide over & quickly

each other Can spread

More energy A lot of energy

Indefinite Indefinite
Take the shape Fill & take the
of the container shape of the container

Definite Indefinite

The tiny particles are the building units of matter.

Different types of matter are made of different kinds of particles.
Particles of gold differ from particles of aluminum.

Particles of vinegar are different from particles of water.

First Term 71