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Is the thickening of syrup when it is put into the refrigerator is an example of a chemical change?
No, the thickening of syrup when placed in the refrigerator is not a chemical change; it is a physical change. This thickening occurs due to the decrease in temperature, which affects the viscosity of the syrup without altering its chemical composition. The syrup can return to its original consistency when warmed, demonstrating that no new substances were created.
What things do not change when they are warmed?
Some examples of things that do not change when they are warmed include abstract concepts like emotions or thoughts, as well as certain physical properties of pure substances such as density or mass.
What happens to liquid oxygen when it is warmed?
When liquid oxygen is warmed, it evaporates and turns back into gaseous oxygen. This is because the boiling point of oxygen is -183 degrees Celsius, so any increase in temperature above this point will cause it to change state.
What is the property of matter where it changes volume when it changes temperature?
The property of solids in which they enlarge when warmed is thermal expansion. The opposite, shrinking when cooled, is thermal contraction. This property greatly effects how bridges, sidewalks, and concrete roads are made. They all have "expansion gaps," gaps between sections that allow the sections to expand in the heat of summer. Without those, the concrete would break and the bridges would warp and bend.
What passages does the air get warmed and cleaned?
Air gets warmed and cleaned as it passes through the nasal cavity, where it is humidified, filtered, and warmed by the mucus and tiny hairs called cilia. Additionally, the air is further warmed and cleaned in the trachea and bronchi by the same mechanisms of mucus and cilia before reaching the lungs.
If a dinner plate is being warmed in an oven is it a chemical or physical change?
This is a physical process.
Side walk is warmed by the heat of the sun physical or chemical?
The sidewalk being warmed by the heat of the sun is a physical process. The sun's rays transfer heat energy to the sidewalk through radiation, causing the molecules in the sidewalk to vibrate more rapidly and increase in temperature. This is a physical change as no new substances are being formed in this process.
What property of Plasticine changes when it is moulded?
Its viscosity (it becomes pliable when warmed by the hand).
What is a sidewalk warmed by the heat of the sun a chemical or physical change?
It undergoes a physical change because the matter that makes up the sidewalk does not change. THe side walk goes through a chemical and physical change because the heat makes it constrict by shacking the particles just like it happens with food
Purple iodine vapor appears when solid iodine is warmed is that chemical or physical change?
It is a physical change because the iodine is changing state from solid to gas without forming any new substances.
When a sample of matter is warmed which property of its molecules increases?
It's Brownian motion
Why is it physical change when purple iodine appears when solid iodine is warmed?
Because the Iodine is undergoing a phase change, which is a physical change. The Iodine is going from a solid to a liquid (I presume), and it's changing color. Those are both examples of physical changes. Phase changes are easily reversible without the use of energy, you could just freeze the iodine, and have the solid again. As for the color change, that's true for a lot of elements, like Mercury. This is not an example of a chemical change because not only is it easily reversible, but because no new substance is formed. You still only have Iodine, but in a different phase, and in a different color.
Is the thickening of syrup when it is put into the refrigerator is an example of a chemical change?
No, the thickening of syrup when placed in the refrigerator is not a chemical change; it is a physical change. This thickening occurs due to the decrease in temperature, which affects the viscosity of the syrup without altering its chemical composition. The syrup can return to its original consistency when warmed, demonstrating that no new substances were created.
What things do not change when they are warmed?
Some examples of things that do not change when they are warmed include abstract concepts like emotions or thoughts, as well as certain physical properties of pure substances such as density or mass.
What happens to liquid oxygen when it is warmed?
When liquid oxygen is warmed, it evaporates and turns back into gaseous oxygen. This is because the boiling point of oxygen is -183 degrees Celsius, so any increase in temperature above this point will cause it to change state.
What is the whole world warmed at?
The whole world is warmed by the sun.
Where is inhaled air moistened and warmed?
Inhaled air is warmed and moistened in the nasopharynx and oropharynx.
