SPM Science Blog
4.2 Structure of Atoms Atoms 1. All matter consists of tiny units called atoms. 2. Atom is a basic unit of all matter. 4.2.1 Subatomic Particles 1. An atom is made up of particles that are even smaller called subatomic particles. There are three types of subatomic particles, which are (a) Protons (b) Neutrons (c) Electrons Subatomic particles … Read more
Change in Heat and Kinetic Energy of Particles 1. The change in temperature will influences the kinetic energy or the speed of the motion of the particles. 2. When a substance is heated, the kinetic energy of the particles in the substance increases. This causes the particles to move or vibrate faster. 3. Likewise, when a substance is … Read more
Matter exists in 3 states of matter, namely, solid state, liquid state and gaseous state. Characteristics of Matter in Solid, Liquid and Gaseous State Characteristics Solid Liquid Gas Arrangement of Particles Particles are arranged in orderly manner and close to one another. Particles are not arranged in order. The space between particles is moderately large. The … Read more
In SPM, you need to know diffusion is one of the proof of the particle theory of matter. the definition of diffusion. diffusion in solid, liquid and gas factors that affect the rate of diffusion and the related experiments. What is Diffusion? 1. Diffusion is a process of spreading of a substance from a region … Read more
Changes in the State of Matter 1. Matter is anything that occupies space and has mass. 2. Matter exists in 3 states, namely the solid state, liquid state and gaseous state. 3. We can catagorise matter into 2 categories: element and compound. 4. Element is the substance that consists of 1 type of atom. Compound … Read more