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Matter is anything which has mass and occupies space. Examples of matter are books, phones, laptops, water, juices, coffee, air, Earth, Moon, Sun, and anything which is composed of atoms. Based on physical characteristics, we can classify matter into two main categories: pure substances and mixtures. Mixtures can further divide into homogeneous and heterogeneous mixtures and pure substances into elements and compounds.
Matter is anything that possesses mass and occupies space. In other words, one which you can weigh and measure volume is matter. Matter includes everything which satisfies the above two conditions: mass and volume.
There are four classical or fundamental states of matter, viz. solid, liquid, gas, and plasma. The latter among the four is not common in comparison to the rest three.
Chemistry is a very important branch of science. Chemistry is the study of science that deals with constituents of matter like atoms molecules, ions etc.; and its properties, structure, behaviour, and interactions among them. Since everything is made up of atoms and molecules, we can see the chemistry all around us. Today, chemistry has grown into a very diverse field. There is a significant overlap between chemistry and other branches of science, for example, biochemistry (chemistry and biology), physical chemistry (chemistry and physics), medicinal chemistry (medicine and chemistry), chemical engineering (chemistry and engineering) etc.
Standard Ambient Temperature and Pressure (SATP)
Standard ambient temperature is 25 ℃ or 298.15 K or 77 ℉.
Standard pressure is 1 bar or 100.000 kPa or 750.06 mmHg (or torr) or 14.504 psi.
Normal Temperature and Pressure (NTP)
Normal temperature is 20 ℃ or 293.15 K or 68 ℉.
Normal pressure is 1 atm or 101.325 kPa or 760 mmHg (or torr) or 14.6959 psi.
Standard Temperature and Pressure (STP)
Chemistry is a branch of science which deals with the study of matter composed of atoms and molecules, their properties, composition, structure, behaviour, and interactions among constituents of matter. Modern chemistry can be categories into five main branches: Physical chemistry, Analytical chemistry, Inorganic chemistry, Organic chemistry, and Biochemistry.
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