StopLearnStopLearnSo let’s start with matter.
Matter is usually defined as anything that has weight and can occupy space. But in modern physics matter can also be defined as a substance that has inertia and occupies physical space. According to modern physics, matter consists of various types of particles, each with mass and size.
All these particles make up a single atom. Atoms combine to form compounds.
A compound is a matter consisting of two or more different elements bonded chemically. A molecule forms when two or more atoms or elements (may be the same type or different types) join together chemically. For example, O2 is a molecule (diatomic) as it contains 2 oxygen atoms that are chemically bonded.
Matter can exist in several phases. The most common states of matter are this 3:
Matter can change from one state to another under some special conditions which includes change in temperature and pressure. Matter can also be converted into Energy by atomic reactions also known as nuclear reactions. Below is the formula:
E = mc 2
where E is the energy in joules, m is the mass in kilograms, and c is the speed of light, which is approximately 2.99792 x 10 8 meters per second in a vacuum.
All matter has been observed to behave as a particle in nature. This is also referred to as the atomic nature of matter which shows that there are spaces in a matter which contains no matter. There has always been evidence of this behaviour of matter but one of the most remarkable evidence is in Brownian motion.
Brownian motion is the random, uncontrolled movement of particles in a fluid as they constantly collide with other molecules. This was described and named after Robert Brown a botanist in 1827.
Watch an exhibition of Brownian motion below:
Read our disclaimer.
AD: Take Free online baptism course: Preachi.com 