The Sun -- like nearly all stars -- burns bright through its nuclear reactions, sending light, heat and energy out into the Universe over a timespan of billions of years. Image credit: NASA / ISS / Space Shuttle Atlantis. But it didn'tneedto be that way. With the mass of about 300...
Heat, oxygen and fuel form the fire triangle. Firefighters often talk about the fire triangle when they are trying to put out a blaze. The idea is that if they can take away any one of the pillars of the triangle, they can control and ultimately extinguish the fire. After ...
Whether bacteria survive and thrive in environments with or without oxygen Their shape, including rods (bacillus), circles (cocci) or spirals (spirillum) Whether bacteria are gram-negative or gram-positive, which are stain tests that provide insight into the composition of the cell's outer protect...
(See How Sun Tans and Sunburns Work for more information.) Viral or Bacterial Infection When a virus or bacteria (also known generically as a germ) invades your body and reproduces, it normally causes problems. Generally the germ's presence produces some side effect that makes you sick. ...
Dry chemical fire extinguishers are the most common home extinguishers. Key Takeaways Fire requires fuel, oxygen and heat to burn. Removing one of these elements will extinguish the fire. Dry chemical fire extinguishers work by smothering the fire, effectively cutting off the oxygen supply to ...
Albumin makes up 60 percent of the protein in plasma, is produced in the liver and is used when blood volume needs to be increased and fluids have not worked, as in cases of severe bleeding, liver failure and severe burns. Immunoglobulins are given to persons who have been exposed to a ...
How can we get sulfur dioxide from sulfur without burning? Burning: Burning or combustion is an exothermic reaction in which a chemical compound reacts exothermically with oxygen. Exothermic reactions are reactions which release energy into the environment. ...
Answer to: Iron in the form of fine wire burns in oxygen to form iron(III) oxide. 4Fe(s) + 3O_2(g) to 2Fe_2O_3(s) How many moles of O_2 are needed...
Some scientists predict that nuclear winter would be followed by an even harsher spring. They theorize that the sunlight bounced back up from the smokecloudswould heat up nitrogen oxides in the stratosphere. At high temperatures, the nitrogen oxides, which formed due to blast-burned oxygen, would...
Albumin makes up 60 percent of the protein in plasma, is produced in the liver and is used when blood volume needs to be increased and fluids have not worked, as in cases of severe bleeding, liver failure and severe burns. Immunoglobulins are given to persons who have been exposed to a ...