WHAT'S TRUE. Excessive consumption of spicy snack foods (such as Takis brand corn chips) can lead to stomach pains and gastritis in children. WHAT'S FALSE. Evidence that moderate consumption of such snacks by children carries a significant risk of ulcers or cancer is lacking.
Uranium and the majority of the other heavy elementsâ¦ are formed by stellar nucleosynthesis in novas and supernovas. Heavy elements from the various sources in our galaxy combined with the mass of hydrogen that was the beginning of the formation our solar system around five billion years ago.
When Uranium, atomic number 92, loses a proton, it is no longer uranium. It is Protactinium, atomic number 91. When it loses another proton, it becomes thorium, Atomic number 90. As the big, unstable atoms decay into smaller atoms, they shoot off high speed particles of various kinds, plus radioactive energy. The process of decay proceeds step by step at a definite rate. After 4.5 billion years, half a supply of radioactive uranium has decayed into a type of lead, whose atomic number is 82.