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 A food item may contain less than 0.5 grams of trans fat per serving but still reflect â0â grams of trans fat on its food label. 2  To ensure that the foods you eat are actually free of trans fat, check that hydrogenated and partially hydrogenated vegetable oils are not listed as ingredients. Be wary of any foods deep fried in restaurants. 2  Deep fried foods may say âfried in vegetable oilâ, but it is often hydrogenated vegetable oil. 3  A food item may contain less than 0.5 grams of trans fat per serving but still reflect â0â grams of trans fat on its food label.