Một bạn học sinh không may bị chết vì ngạt khí carbon monoxide, khi quan sát màu da của bạn học sinh đó thì em sẽ thấy da của bạn có màu gì?

if you're asking what comes out, it's steam.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.