The length of time that a helium balloon will float depends on many factors that include inflation level, temperature, size and material of the balloon and if it is sealed with a product like Hi-Float. For example, a lat... More » Science Chemistry

Helium balloons float because they are less dense than the surrounding air, which causes them to rise. Gravity acts on helium balloons the same way it does on the surrounding air; it has no effect on whether the balloon ... More »

Helium is used for applications ranging from sending rockets into space to helping deep sea divers breathe. Helium is also at work in the balloons at parties or in the blimp floating overhead at a ball game. It is also u... More » Science Chemistry Atoms & Molecules

The length of time that gammon steak should cook for depends on many factors, including the size and thickness of the meat; however, like other types of pork, gammon steak should cook until it reaches an internal tempera... More »

As of 2015, all modern airships, party balloons and many weather balloons are inflated using helium. Helium is a lighter-than-air gas that is relatively inert, especially in comparison to hydrogen, another gas that is so... More » Science Chemistry

At today's rate in 2015, the world will run out of helium in 25 to 30 years, and that means much more than losing birthday balloons. Helium is critical to operating medical equipment, electronics and even NASA technology... More » Science Chemistry

The 13 elements that are room temperature gases are radon (Rn), xenon (Xe), krypton (Kr), argon (Ar), chlorine (Cl), neon (Ne), fluorine (F), oxygen (O), nitrogen (N), helium (He) and hydrogen (H). Most non-metals in the... More »