What element burns in contact with water?

What element burns in contact with water?

This page describes the reactions of the Period 3 elements from sodium to argon with water, oxygen and chlorine. Sodium has a very exothermic reaction with cold water producing hydrogen and a colourless solution of sodium hydroxide. Magnesium has a very slight reaction with cold water, but burns in steam.

How can you die from a sneeze?

 If you try to suppress a sneeze, you can rupture a blood vessel in your head or neck and die.

What kind of shape is a star?

A regular star polygon (not to be confused with star-shaped polygon) is a regular non-convex polygon. Only the regular ones have been studied in any depth; star polygons in general appear not to have been formally defined.

Is the Big Dipper an asterism?

The Big Dipper is one of the most well-known and easily spotted collection of stars in the Northern Hemisphere, and although it is often mistaken to be a constellation, it is merely an asterism. It consists of seven bright stars and is part of the constellation Ursa Major or Great Bear.

Which animal has the fastest metabolism?

In fact, no animal has a faster metabolism—roughly 100 times that of an elephant. Hummingbirds burn food so fast they often eat 1-1/2 to 3 times their weight in nectar and insects per day.

Which state has the most volcanoes in the US?

There are about 169 volcanoes in the United States that scientists consider active. Most of these are located in Alaska, where eruptions occur virtually every year.

Do all fish need oxygen?

Fish need oxygen too, but since they don t have lungs, they take oxygen from the water in which they live. The oxygen in the water available to fish is called dissolved oxygen (oxygen that is dissolved in the water). Fish use gills to take oxygen from water just as we use our lungs to take oxygen from the air.

What animals change colors?

Furthermore, odds are that when you do see a chameleon change its color, it’s probably trying to broadcast its mood rather than evade predators. Nevertheless, the animal kingdom is filled with amazing color-changers, several of which dramatically outdo the chameleon clan in the skill of rapid-fire camouflage.