9 Questions
Explain the difference between an atom and a molecule in terms of their composition and behavior?
An atom is the smallest unit of an element that retains its chemical properties, while a molecule is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound. Atoms are indivisible and can exist independently, whereas molecules require at least two atoms to form and can exist as independent entities or as part of a larger structure.
Describe the role of atoms and molecules in the formation of matter and its properties?
Atoms are the building blocks of matter, combining to form molecules which in turn make up various substances. The arrangement and types of atoms in a molecule determine the properties of the substance, such as its physical state, reactivity, and other characteristics.
How do atoms and molecules contribute to the study of chemistry and understanding the natural world?
Atoms and molecules are essential to the study of chemistry as they form the basis of chemical reactions, compounds, and materials. Understanding their behavior and interactions allows scientists to comprehend natural phenomena, develop new materials, and advance various scientific fields.
What is the smallest particle of an element that can take part in a chemical reaction?
Atom
What is the fundamental unit of a chemical element?
Atom
What is the charge of the nucleus of an atom?
Positive
Which subatomic particle is responsible for the chemical behavior of an atom?
Electron
Which subatomic particle determines the identity of an element?
Proton
What is the total number of electrons in the outermost shell of an atom with atomic number 8?
2
Test your knowledge of atoms and molecules with this quiz based on the concepts from class 9 NCERT. Explore the differences in composition and behavior of atoms and molecules, and understand their role in the formation of matter and its properties. Gain insights into how atoms and molecules contribute to the study of chemistry and our understanding of the natural world.
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