WebOnly a few elements are found as single, uncombined atoms; Table 3.5 lists these elements. Under normal conditions, all of these elements are gases; collectively, they are known as the noble gases. They are also called monatomic gases, meaning that they exist, uncombined, as single atoms (mono means "one"). The formula for each of the noble ... WebJul 18, 2024 · These multi-atom combinations are called molecules. A molecule is the smallest part of a substance that has the physical and chemical properties of that …

3.5: Pure Substances and Mixtures - Chemistry LibreTexts

WebThe temperature above which chlorine exists only as a gas no matter how great the pressure : 290.75°F (143.75°C) Critical Volume: The volume of a unit mass of chlorine at the critical pressure and temperature : 0.02795 ft 3 /lb (0.001745 m 3 /kg) Density: The mass of a unit volume of chlorine at specified conditions of temperature and ... WebA molecule is the smallest part of a substance that has the physical and chemical properties of that substance. In some respects, a molecule is similar to an atom. A molecule, however, is composed of more than one atom. Some elements exist naturally as molecules. For example, hydrogen and oxygen exist as two-atom molecules. flock protectors

Chemistry Multiple Choice #2 Flashcards Quizlet

WebMar 1, 2004 · Diatomic gases are elements that do not exist as a single molecule, in this case Cl, but rather as the diatomic molecule Cl2. ... While it is a gas, chlorine can cause … WebJun 22, 2024 · There are really only seven diatomic elements. Five of them — hydrogen, nitrogen, fluorine, oxygen and chlorine — are gases at room temperature and normal pressure. They're sometimes called elemental … WebSep 28, 2014 · List of the 7 Diatomic Elements. The following 5 element gases are diatomic molecules at room temperature and normal pressure: Hydrogen – H 2. Nitrogen – N 2. Oxygen – O 2. Fluorine – F 2. Chlorine – Cl 2. The homonuclear diatomic gases are also known as “molecular gases” or “elemental gases.”. Bromine and iodine commonly ... flock protection dog