Page 5 - E_Book_Atomic_Theory
P. 5
Material Description
What do you think
looking at the
picture on the side?
Do you know what
Figure 1. Iron Pile made it up?
Figure 2. Ice cubes that are melting
Let's Find Out ....!
Every matter in the universe is made up of tiny particles known to experts as atoms.
Since ancient times, humans first thought about the substances that make up each material, then
formulated the atomic theory and until now in this sophisticated age, the existence of atoms has
been accepted by everyone, but how the actual shape of these atoms and their constituents is not
known with certainty. Experts only conjecture based on laboratory observations of the symptoms
caused when a material is given a certain treatment. From the observations of these symptoms
the experts then made a theory about the atom and estimated the shape of the atom which was
known as the atomic model. The atomic models proposed by experts have been developing until
now and will continue to evolve along with the increasingly sophisticated laboratory instruments
supported by extraordinary advances in science and technology.
Chemistry_grade_X 4