they expand
No, substances do not have to contain water to be heated in the microwave. The microwave oven uses electromagnetic waves to agitate the molecules in the substance being heated, causing them to generate heat regardless of their water content.
No, hydrophobic substances do not dissolve in water because they are repelled by water molecules. This is because hydrophobic substances are non-polar, while water molecules are polar, causing them to be incompatible.
Two substances that expand when heated are water and mercury. Heating these substances causes their molecules to become more energized and move farther apart, leading to an increase in their volume.
Adhesive forces are the attraction between molecules of different substances. This differs from cohesive forces which is attraction between same substances.
When water is heated, it becomes thinner because the molecules move further apart, decreasing its density. This is why hot water rises above colder water.
When substances are heated, their molecules gain kinetic energy and vibrate more rapidly. This increased motion causes the molecules to move further apart from each other, leading to expansion. The expansion occurs because the increased distance between the molecules results in a larger volume occupied by the substance.
when air is heated ,air pressure decreases because the molecules are
because the particles
When heated, most substances expand due to the increase in kinetic energy of their atoms or molecules. This leads to an increase in the average distance between the particles, causing the substance to expand.
because the particles
No, substances do not have to contain water to be heated in the microwave. The microwave oven uses electromagnetic waves to agitate the molecules in the substance being heated, causing them to generate heat regardless of their water content.
When substances are heated, typically their molecules gain energy and begin to move more rapidly. This increased movement can cause the substance to expand, change phase (from solid to liquid or gas), or even chemically react to form new substances. The specific changes depend on the substance's properties.
up because when heated, it becomes light and goes up.
Because of friction
Matter expands when heated, because molecules move farther apart.
Expansion means increase in the volume. When the substances are heated the K.e of the molecules is increased to a certain level that they exerts pressure on each other and collide with themselves. there negligible I.M.F begin to decrease more further and in this the molecules become widely seperated from eachothe hence, the substance is expanded.
up because when heated, it becomes light and goes up.