The viscosity of lava depends on the lava type ie minerals in original melted substance and temperature
No. This is simply a change of state from liquid to solid. It is a physical change.
Lava hardens, and the lava is turned into obsidian, or ignoeus rock.
lava cooling to become rock is a change of state from liquid to solid
No, a lava lamp is not a reversible change. The melting and mixing of the wax and oil inside the lamp is a physical change that cannot be easily reversed to its original state.
A lava lamp demonstrates a physical change. The wax in the lamp changes states from solid to liquid and back to solid again as it is heated and cooled, but the chemical composition of the wax remains the same throughout the process.
it didnt
Well it depends on how bad the lava flow is. If the lava is flowing slow then the shape of the volcano won't change much, But if it flows with force then bits of the volcano will fall off and change the shape of the volcano. Hope this answer helps!!
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The chemical structures remain unchanged.
A lava lamp demonstrates a physical change. The wax inside the lamp changes states from solid to liquid due to the heat of the light bulb, but its chemical composition remains the same throughout the process.
It's a physical change - more intermolecular bonds (bonds between different molecules) are formed due to the cooling of the matter, and the state of matter changes from liquid to solid. The chemical makeup of the lava does not change.
you place a lava block down and die