Pearlite is a laminated material composed of alternating layers of ferrite and cementite. It happens when steel is progressively cooled, generating a eutectic combination. A eutectic mixture occurs when two molten materials crystallize at the same time. Under these conditions, ferrite and cementite form...
Condensation happens when water vapor cools down and changes back into liquid water, forming clouds. Precipitation occurs when these water droplets in clouds become heavy enough to fall back to Earth as rain, snow, sleet or hail. Water vapor also acts as a greenhouse gas, trapping heat in the...
Some scientists believe that hydrogen energy may be a cleaner, more efficient way to power our world. Hydrogen is a naturally occurring gas and the most abundant substance in the universe. (The word in Greek means “water former” because hydrogen creates water when burned.) When used alongside...
When repotting the prayer plant, it can easily get transplant shock. This often happens if you leave the root ball exposed to the air for a long time and let the roots dry. Solution When transplanting the prayer plant, always prepare the new pot or new spot first. Add the potting mix ...
If you plot out the solid-liquid-gas behavior of a substance like water on a graph showing both temperature and pressure, you create what's called a phase diagram for the substance. The phase diagram shows the temperatures and pressures at which a substance changes between solid, liquid and ...
Air has a density of 1.18g/l at room temperature. If the volume of air in a balloon is 135, 000 liters what is the mass of the air? When an air bubble rises in water, what happens to its mass, volume, and density? What is the density of a solid that has a...
With four dead and a mess at Altamont, Rolling Stone tries to get to the bottom of what really happened at the festival.
However, it can be corroded when exposed to concentrated acids. Thermodynamically, titanium burns in the atmosphere at a temperature lower than its melting point. The melting of titanium happens in a chemically inert atmosphere such as a vacuum. Its thermodynamic properties do not allow it to ...
To better understand this slightly nuanced topic, we must first understand the more fundamental concept of temperature. Temperature is the measure of hotness and coldness. It is the degree of heat present in a substance that gives us the sensation of warmth. On a molecular level, temperature is...
The substance constituting Earth's atmosphere, particularly: I'm going outside to get some air. The air on Mars is so thin that high and low temperatures on the day differ a lot. Air Understood as one of the four elements of the ancient Greeks and Romans. Air Understood as a particular...