WebExpert Answer. Helium gas is a pure element because it is made up of helium atoms. Rocky road ice cream and concrete are heterog …. Now that you have classified each substance as a pure substance or a mixture, if it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. WebMar 3, 2024 · calcium (Ca), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is the most abundant metallic element in the human body and the fifth most abundant element in …
Is Helium An Element, Compound, or Mixture? [ANSWERED]
WebElements. Any substance that contains only one kind of an atom is known as an element.Because atoms cannot be created or destroyed in a chemical reaction, elements such as phosphorus (P 4) or sulfur (S 8) cannot be broken down into simpler substances by these reactions.. Example: Water decomposes into a mixture of hydrogen and oxygen … WebHelium does not form a compound because its electron shell is completely full. You can make it reactive with high amounts of pressures and by converting it to an ion form, which … interstate 880 shooting
What Are Examples of Pure Substances? - ThoughtCo
WebMay 23, 2024 · Element Explanation: An element is a pure substance as well, because if we fill up a balloon with just helium gas, it will only contain helium atoms. On the periodic … WebSep 20, 2024 · Is helium a compound yes or no? Helium is a gaseous element with atomic symbol He, atomic number 2, and atomic weight 4.00. Is helium in a balloon an element … WebApr 13, 2008 · Helium is an element. It is a noble gas. It is in the 18th period. Wiki User ∙ 2014-12-21 08:39:52 This answer is: Study guides Chemistry 19 cards Do neutrons have … interstate 88 tow