0
What happens to the molecules of most substances when they are heated?
Wiki User
∙ 10y ago
This is dependent on the amount of heat involved. Low range of heat and the Molecules simply begin to move faster and generate heat within the material. High range of heat and the molecules can be broken apart causing chemical reactions that physically change the material. For example, Hydrogen Peroxide H2O2 will ultimately break down into H2O and O2. The lone O atom is unstable and quickly becomes O2.
Another change can be rapid Oxidation (Burning). This radically changes the material.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
What expands when it is heated?
Most substances expand when heated.
What happens to the volume of most substances as they are heated?
the volume of the solid would go down , thus making the solid into a liquid.
What happens to the volume of most substances when they get colder?
they contract
What happens when the temperature of a substance decreases significantly A. Most substances will expand. B. Most substances will gain atoms. C. Most substances will contract. D. Most substances will d?
When the temperature of a substance decreases significantly most substances will contract.
Which is the only thing which contract on heating?
Most substances will expand when they are heated. A few substances will contract; one example is water between zero and 4 degrees centigrade.
What happens to most substances when they are heated?
They expand due to the molecules speeding up.
What happens when most substances are heated?
All get very hot.
What happens to a solid when is heated?
A substance in the solid phase will typically expand when heated. Most substances when heated sufficiently will melt into a liquid, assuming that they do not combust or sublimate.
What expands when its heated?
Most substances expand when heated.
What expands when it is heated?
Most substances expand when heated.
When most substances are heated they....?
They expand
What do most substances like the liquid in a thermometer do when they are heated?
expand
What happens to the volume of most substances as they are heated?
the volume of the solid would go down , thus making the solid into a liquid.
What happens when evaporation occurs?
When heated up, water molecules (and most molecules in general) will speed up, and start moving quickly. When they reach a certain heat, they turn into gas. It's quite simple.
How does the density of most substances change when they are heated?
generally, the density of a substance decreaces when heated, with the exception of ice, which is less dense than water.
What happens to the volume of most substances when they get hot?
It expands
What happens to the volume of most substances when they get colder?
they contract
