Expansion of the Universe
The expansion of the universe means that, on sufficiently large scales, distances between widely separated gravitationally unbound regions increase with…
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The expansion of the universe means that, on sufficiently large scales, distances between widely separated gravitationally unbound regions increase with…
Choose variables, fit a suitable function, state units and domain, then interpret rather than merely calculate.
Ordinary light is unpolarized because its electric-field vibrations occur in many directions perpendicular to the direction of travel. When these vibrations…
Oxidising power falls down Group 17 because atoms get larger and more shielded, electronegativity falls, and gaining an electron becomes less favourable. So F₂…
Energy Conversion is the process of changing energy from one form to another. Law of Conservation of Energy states that energy can neither be created…
Dilute Solution Dilute solutions are those which contain a relatively small amount of dissolved solute in the solution. Simple explanation: A…
Functional Programming is a programming paradigm where the code is divided into functions based on functionality, and developers focus more on what is to…
A prototype is a preliminary version or working model of a product. It is used to test and validate ideas, gather feedback, and refine the design before…
The two axes cut the plane into four quadrants, numbered anti-clockwise from the top-right. Quadrant I is ++ (x positive, y positive). Quadrant II is -+ (x…
Cut a paper strip about 2-3 cm wide. Draw a baseline about 1.5-2 cm from the end in PENCIL, not ink. Ink would dissolve and run with the sample. Put a tiny…
Atomic size is the average distance between the atomic nucleus and the electronic outer shell. Simple explanation: Atomic size is the distance from…
Partial Pressure: The pressure exerted by an individual gas in a mixture of gases. Mole Fraction: The ratio of the number of moles of a component to…
Data presentation is the process of showing the relationship between two or more datasets with the help of visual tools or aids.
An angle subtended by a diameter at the circumference is a right angle.
Gravitational field strength decreases as altitude above Earth increases because the object becomes farther from Earth’s centre.
System Unit: The system unit is the central hub of the computer, housing its components, such as the motherboard, processor, and drives. All input and…
Definition: Stereoisomers are molecules that have the same molecular formula but differ only in the relative arrangement of -H and -OH group in 3D space at…
Succession is directional community change after new habitat or disturbance. Primary succession begins without soil; secondary succession starts where soil…
Ethanol (CH3CH2OH): Ethanol is an alcohol with the molecular formula C2H5OH. It is the alcohol found in alcoholic beverages and is widely used…
Circular measure uses radians. The radian measure of a central angle is theta = arc/radius. You get 1 radian when the arc length equals the radius. A full turn…
Bullet Points from Arrays refers to the technique of using a JavaScript array to store data and dynamically generating an HTML list (`<ul>` or `<ol>`) from…
Independent: stretch of a spring. Dependent: extension. Or independent: mass, dependent: period of a pendulum. Put units on both axes of the graph.
NO2 acts as a catalyst in the oxidation of SO2 to sulphuric acid, thereby increasing the concentration of another strong acid in the atmosphere.…
School halogen uses are named slogans: chlorine in water disinfection, fluoride in toothpaste, iodine as an antiseptic name, PVC/PTFE as polymer names, and…