Page 56 - SCERT Kerala State Syllabus 8th Standard Basic Science Textbooks English Medium Part 1_Neat

Isn't it clear that air requires space to occupy.
Hang two balloons filled with air at the two ends of a
30 cm long metal scale. Affix a piece of cellotape on
one of the balloons. With the help of a thread, suspend
the scale in a balanced position (Figure 4.3). Then,
pierce the balloon with a needle on the cellotape.

Record your observation.
What do you infer from this?

From these experiments what inferences can be drawn
Fig. 4.3
about the properties of matter.
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Plasma and other states
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Matter is also found in states
Matter is anything that occupies space and has mass. other than solid, liquid and gas.
The fourth state of matter is
We are familiar with materials in the solid, liquid and
Plasma. Matter is found in plasma
gaseous states. state in the central part of the sun
Which properties of the solids are you familiar and other stars. Plasma is the state
with? of matter in which the particles
exist in ionized state at very high
temperature.
What are the properties of liquids?
The fifth and sixth states of matter
are named Bose - Einstein
Which of these properties are applicable to gases? Condensate and Fermionic
Condensate respectively. Another
The properties related to the three states of matter are state of matter is Super Fluid State.
given below. Complete Table 4.2. All these states can be generated
in the laboratory only under
(Tick the appropriate ones).
special conditions.

Property Solid Liquid Gas
Has mass
Has definite volume

Has permanent shape

Table 4.2

Basic Science VIII 55 55
Basic Science VIII