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What curve shows the relationship between temperature and time?
A temperature vs. time curve is often represented by a heating or cooling curve. During heating, temperature increases over time at a steady rate until reaching a plateau where a substance changes state. During cooling, temperature decreases over time at a steady rate until reaching another plateau at the substance's freezing or melting point.
Substance left after heating coal or petrol?
The substance left after heating coal is coal ash. The substance left after heating petrol is a residue called coke. Both of these byproducts are typically composed of carbon and other elements.
What do we call substance which changes readily into vapour without heating?
A substance that changes readily into vapor without heating is called a volatile substance. Examples include alcohol and acetone.
What is a solid substance left after heating coal or petrol?
The solid substance left after heating coal is called coal ash, while the residue left after heating petrol is known as petroleum coke. These solid substances are byproducts of the heating process and can vary in composition depending on how the coal or petrol was processed.
What is heating to dryness mean?
Heating a solution until all the solvent has evaporated is known as heating to dryness.
Is heating tungsten until it glows red a chemical or physical change?
Heating tungsten until it glows red is a physical change because the composition of the tungsten does not change. The change in color is a result of the increased temperature causing the atoms to vibrate and emit visible light.
Is heating a piece of steel until it glows reversible or irreversible?
Heating steel detempers it, it makes it softer.
Is an asteroid considered a shooting star?
No. A shooting star, scientifically called a meteor, is an object from space that is passing through the atmosphere, heating the air until it glows brightly.
What glows in the dark until you squish them?
FireFlies
Why do incandescent lamps have continuous emissions?
Incandescent lamps have continuous emissions of light because they work by heating a filament wire until it glows and produces light. This continuous emission of light comes from the constant heating of the filament by an electric current passing through it.
Can steel be hardened or temperedby heating it till it glows red-hot and then cooling it quickly?
Yes
A typical incandescent light bulb produces what?
A typical incandescent light bulb produces light by heating a filament wire until it glows. The glowing filament produces both visible light and heat.
When heating a substance what happens?
Heating a substance can result in a chemical reaction, which usually results in a simple combustion reaction. This is because Oxygen, or O2, is added to the substance, which can dramatically alter the substance.
What curve shows the relationship between temperature and time?
A temperature vs. time curve is often represented by a heating or cooling curve. During heating, temperature increases over time at a steady rate until reaching a plateau where a substance changes state. During cooling, temperature decreases over time at a steady rate until reaching another plateau at the substance's freezing or melting point.
What is the melting methord?
The melting method is a technique used to determine the melting point of a substance. It involves heating the substance gradually until it changes from a solid to a liquid phase, and recording the temperature at which this occurs.
What is the name of the part of a light bulb that glows?
The part of a light bulb that glows is called the filament. It is typically made of tungsten and emits light when an electrical current passes through it, heating it up to produce light.
Substance left after heating coal or petrol?
The substance left after heating coal is coal ash. The substance left after heating petrol is a residue called coke. Both of these byproducts are typically composed of carbon and other elements.
