It is according to what kind of material the lava is made from. If there are different minerals in the lava, then it is according to what temperature the mineral returns to the solid state, or a rock. Some minerals have a liquid temperature, close to the liquid temperature of another minerals, and chances are they will form in the same rock. Temperature determines what the rocks will become. Like gold is found in quartz. Their liquid temperatures are close so they form together.
Magma.
Lava or Magma is rock in its molten state.
Magma is the molten material beneath the surface (crust) of the earth. Magma is called lava when it emerges from the earth in its molten state. The volcano is the geologic structure at the end of a volcanic chimney, which is the duct that connects the magma pocket in the earth through the crust to the surface. The volcano is actually at the "output end" of that volcanic tube.
Yes, it can change state. Just freeze it.
not always, like the change is in the display without change in composition then it is change of state, other then will be chemical change
Your question as phrased is unclear. I will proceed to answer both interpretations I have of your question. Note: When magma crystallizes, it forms igneous rocks. 1) What is the change of state when magma forms from igneous rock? - Melting. Rocks are the solid state of matter and magma is the liquid state (although it can be a very viscous liquid). Changing something from solid to liquid is melting. 2) What is the change of state when magma crystallizes to form igneous rocks? - Solidification/Freezing. Magma becomes too cold to continue in a liquid state, it solidifies and crystallizes into solid igneous rocks: freezing.
No, magma is already in a molten state. It is a mixture of molten rock, gases, and solids that exists beneath the Earth's surface. Magma can solidify to form igneous rocks when it cools and crystallizes.
Solids become liquids. A phase change.
Magma.
It's very high temperature down in mantle so it resulting a solid rock to change into "molten" state. The molten material in the mantle is magma.
There is no solvent in magma. Rocks turn to a liquid state because of super-heating, not because the solids were dissolved in any solvent.
When the force of magma pushing upwards equals the force of the rock pushing downwards, the system is said to be in a state of equilibrium. This balance prevents the magma from continuing to rise or the rock from collapsing further.
No, change of state is a physical change.
A change of state is a molecular change.
Lava or Magma is rock in its molten state.
Yes, melting is a change of state.
A change of state is a physical change.