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What changes over time with density?
density changes when the substance changes.
When zinc carbonate is heated on a dry test tube what observation is seen?
when zinc carbonate is heated it' white colour changes to yellow . And when it is cooled it again changes to it original colour
Oil expand or contract when heated?
Oil does expand when heated and contracts when cooled.
Why does metal become more brittle after being heated then cooled?
Not all metals do, and it depends on the rate at which the metal is cooled. Basically, in some metals the crystal pattern in the metal changes when heated- and if rapidly cooled, that pattern is sort of "locked in" to the metal. If that locked in pattern is harder or more brittle than the earlier state, the metal has become more brittle. However, heating and then SLOW cooling can make some metals less brittle- it is called annealing.
What is happening to the molecules of a substance when they are heated or cooled?
When a substance is heated, the molecules gain kinetic energy and move faster, causing them to vibrate and collide more frequently, which increases the temperature of the substance. When a substance is cooled, the molecules lose kinetic energy and move slower, reducing the frequency of collisions and vibrations, which lowers the temperature of the substance.
What changes take when water is heated or cooled?
what changes take place when water is heated or cooled
What changes takes place when water is heated or cooled?
what changes take place when water is heated or cooled
What changes over time with density?
density changes when the substance changes.
What happens when solids and liquids are heated or cooled?
A solid can change Into a liquid when it is heated Example- when heated solid chocolate, the chocolate changes into a liquid. A liquid Can change into a solid when it is cooled Example - If you leave juice in the freezer , the liquid changes into a solid.
When zinc carbonate is heated on a dry test tube what observation is seen?
when zinc carbonate is heated it' white colour changes to yellow . And when it is cooled it again changes to it original colour
How does density change?
Density usually changes when an object is heated or cooled - especially in the case of gases, or when there is a change of phase.
How does water changefrom one state to another?
Water changes from one state to another by being heated or cooled
What is the opposite of heated?
The opposite of heated is cooled.
What does ac condenser do?
Refrigerant enters the condenser as a high pressure vapor. In the condenser, the heated refrigerant is cooled by transferring its heat to the air which passes through the condenser fins, and it changes state to a liquid during this time.
Does plastic need to be heated or cooled to make it set?
Cooled to set
Do particles get smaller or bigger when heated?
When particles are heated or cooled, they do not change size at all. They simply move with greater kinetic energy so the space between particles increases. This prompts the changes in size we see when substances are heated or cooled.
Can gold be heated and cooled?
Yes
