Volcanic rocks are hot if they are freshly erupted. Otherwise, no.
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Yes. Volcanic rocks are extrusive igneous rocks.
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No. Volcanic rocks are made of the same materials that other rocks are.
The most obvious reason for the temperature of volcanic rock is that it comes from within the Earth. Once you get below the cool, calm surface that we live on, you get into the mantle, lithosphere, asthenosphere, etc. where the temperatures are so hot that rocks melt and create magma. That magma is what spews out of volcanoes. Once it cools, it creates rocks, but in the meantime, those rocks are extremely hot.
No. Only extrusive igneous rocks are volcanic.
Volcanic rocks are classified as extrusive igneous rocks, forming from the solidification of lava.
No. Volcanic rocks are extrusive. Intrusive rocks are sometimes called plutonic.
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Magma that is ejected during a volcanic eruption forms extrusive igneous rocks. They are also referred to as volcanic rocks.
No. Volcanic rocks are igneous (although not all igneous rocks are volcanic). Sedimentary rocks are made of sediment naturally cemented together. However, volcanic (or extrusive igneous) rocks can be eroded into sediment, which can be cemented, compacted, or otherwise become sedimentary rock such as sandstone or conglomerate. It is then not considered igneous.