The following Topics and Sub-Topics are covered in this chapter and are available on MSVgo:
Some Basic Concepts of Chemistry is the first chapter of the Chemistry NCERT book for Class 11. It covers the importance of Chemistry in our daily life and makes us familiar with introducing different divisions of Chemistry. Everything exists in a differentphysical state and nature of matter, which could be categorized in solid, liquid, gaseous, and plasma state. And with this introduction, your first chapter in Chemistry starts.
Matter is omnipresent, has mass, and occupies space. Broadly speaking, matter is categorized into three different categories, namely solid, liquid, and gas. Its measurement is a complicated factor as a single metric cannot be applied to different states of matter like solid, liquid, and gas. The International System of Units Si is a standard system which is followed by the whole science community and is the same everywhere. Mass and weight is a standard measurement metric which helps in quantifying any state of matter. As it is a fact that every state of matter has mass, it is imperative to come up with a standard measurement metric to measure it.
But measurement is an ambiguous term as there can be varying degrees of uncertainty in measurement that arises from various factors. The factors can be human-made or they can be physical factors like temperature, pressure etc.
Scientific Notation: Science has different terms to simplify the overall processing of huge to very small numbers. Like 10n where n is the scientific notation which signifies the power.
Scientific Notation Rules:
Significant figures: It helps in determining the precision of any measurement and is measured in the number of digits in that measurement.
Dimensional Analysis: Dimensional analysis is looking at the units’ particular equations and allowing you to make a determination of final units (and possibly the correctness of your derivation of units for any equations). They come together when you are converting quantities to determine yield or some other calculated property. It helps in converting between units.
The basic law, which is present in the first chapter of the Chemistry Class 11 textbook, tells you about the postulate framed by Dalton. Dalton tried to describe a relationship between the atoms and molecules with respect to matter and their mass. According to NCERT:
1) All matter is made of atoms. Atoms are indivisible and indestructible.
2) All atoms of a given element are identical in mass and properties
3) Compounds are formed by a combination of two or more different kinds of atoms.
4) A chemical reaction is a rearrangement of atoms.
Dalton’s atomic theory proved to be a unique eye-opener in the field of Chemistry for the novice. Dalton was the first to explain the basic laws of matter in the scientific community. Now, let’s cover the two important topics of atomic and molecular masses.
The atomic mass is the weighted average of the masses of all the isotopes of an element, while the molecular mass is the sum of the masses of the atoms in a molecule.
Average Atomic Mass is the weighted average mass of all isotopes of an element. We will now check the different laws of chemical combination.
Laws of Chemical Combinations: The IUPAC has recommended five laws that check the chemical combinations of different elements.
1. What is the basic concept of Chemistry?
Some Basic Concepts of Chemistry is the first chapter of the CBSE high school Chemistry course which dwells more on providing a brief introduction to the subject. You would be looking at the fundamental parts of Chemistry which includes atomic mass, molecular mass, Dalton’s law, mole, percentage equivalence, and more.
2. What is the definition of Chemistry?
According to NCERT, “Chemistry is the branch of science that studies the composition, properties and interaction of matter. Chemists are interested in knowing how chemical transformations occur. Chemistry plays a central role in science and is often intertwined with other branches of science like physics, biology, geology, etc.”
3. What are the 5 types of Chemistry?
The five types of Chemistry include:
The MSVgo app provides a detailed list of professionally curated topics from Chemistry where you can learn by watching videos, listening to audio, and checking lessons. If you feel the need to get a crystal clear grasp of concepts, you should definitely check out this site.