Igneous rocks form when magma or lava cools and hardens into a rock. Magma and lava are rocks that are so hot they move like a liquid. Magma is molten rock that is underground; lava is molten rock that is above the ground â and that is the only difference between them.A common igneous rock is granite.gneous rocks form when magma or lava cools and hardens into a rock. Magma and lava are rocks that are so hot they move like a liquid. Magma is molten rock that is underground; lava is molten rock that is above the ground â and that is the only difference between them.
In partial hydrogenation, the resulting fats are semi-solid at room temperature. In full hydrogenation, the oils become completely solid. The problem with partially hydrogenated oils is that they contain trans fat, which raises LDL (âbadâ) cholesterol, lowers HDL (âgoodâ) cholesterol and has other harmful effects. In contrast, fully hydrogenated oils, in essence, become saturated fatsâbut they contain no trans fat.
1 Fats from âvegetableâ oils (these are highly processed, industrial oils). 2  Fats that are hydrogenated (these are liquid oils chemically processed to be solid). 3  Trans-fatty acids. 4  Supposedly âgoodâ fats such as coconut oil that are chemically treated or deodorized (sometimes marked as refined).o contrast, here are some criteria that make a fat a less good choice: 1  Fats that are a high percentage of polyunsaturated fatty acids. 2  Fats from âvegetableâ oils (these are highly processed, industrial oils). 3  Fats that are hydrogenated (these are liquid oils chemically processed to be solid). 4  Trans-fatty acids.