1 Questions
Class 9 science subject from 1 to 3 chapter ncert
covers various topics related to physics, chemistry, and biology.
Study Notes
Chapter 1: Matter in Our Surroundings
- Matter can be classified into three states: solid, liquid, and gas, based on its physical properties.
- Particles of matter are in constant motion, with the speed of motion increasing as the state of matter changes from solid to liquid to gas.
- The kinetic molecular theory explains the behavior of particles in different states of matter.
Chapter 2: Is Matter Around Us Pure
- Matter can be classified as pure substances or mixtures based on its composition.
- A pure substance has a fixed melting and boiling point, and its properties are consistent throughout.
- Mixtures can be separated into their components using various separation techniques such as filtration, sedimentation, and chromatography.
Chapter 3: Atoms and Molecules
- An atom is the smallest unit of matter that retains the properties of an element.
- Atoms are made up of protons, neutrons, and electrons, with protons and neutrons found in the nucleus.
- The atomic number of an element is the number of protons in the nucleus, and the mass number is the sum of protons and neutrons.
Test your knowledge of Class 9 science with this quiz covering chapters 1 to 3 of the NCERT curriculum. Challenge yourself with questions related to fundamental concepts in physics, chemistry, and biology.
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