What causes an element to be reactive?
The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Alkali metals are highly reactive because they readily lose the single electron in their outermost shell.
What are some examples of reactivity?
Reactivity is the ability of matter to combine chemically with other substances. For example, iron is highly reactive with oxygen. When it combines with oxygen, it forms the reddish powder called rust (see Figure below). Rust is not iron but an entirely different substance that consists of both iron and oxygen.
How do you handle reactive materials?
Handle containers carefully to avoid damaging them. Keep containers tightly closed except when actually using the material. Avoid returning used chemicals to containers of unused materials. Keep only the smallest amounts possible (never more than one day’s supply) of dangerously reactive materials in the work area.
What reacts with water to produce fire?
The alkali metals such as sodium, potassium and lithium react with water to produce heat and flammable hydrogen gas, which can ignite or combine explosively with atmospheric oxygen. Water-sensitive chemicals are materials which react violently with water to produce heat and flammable or toxic gas.
How can dangerously reactive material hurt you?
Dangerously Reactive Materials are unstable or highly reactive materials that can undergo extremely hazardous uncontrolled reactions. They can cause explosions, fires or extreme heating, with potential for significant personal injury and property damage.
What makes liquid oxygen so dangerously reactive?
In the gas the exothermic nature of combustion reactions accelerates reaction with oxygen gas by increasing the collision rate between oxygen molecules and the surface being oxidized. So based on this simplified argument oxygen at a liquid-like density can be more reactive than a much warmer gas.
What is a characteristic of a reactive material?
Reactive materials are commonly regarded as those materials that can be hazardous by themselves when caused to react by heat, pressure, shock, friction, a catalyst, or by contact with air or water. Reactive interactions require the combining of two or more materials to pose a hazardous situation by chemical reaction.
Are all chemicals reactive?
In crystalline compounds, the crystalline form can also affect reactivity. However, in all cases, reactivity is primarily due to the sub-atomic properties of the compound. Although it is commonplace to make statements that substance ‘X is reactive’, all substances react with some reagents and not others.
What is reactive hazard?
Reactive hazards are the dangers associated with uncontrolled chemical reactions in industrial processes. These uncontrolled reactions – such as thermal runaways and chemical decompositions – have been responsible for numerous fires, explosions, and toxic gas releases.
Which 2 groups are the most reactive?
The two most reactive groups of elements are the alkali metals and the halogens, because of their valence electrons.
What’s high explosive?
High explosives consist of materials that typically combine the reacting elements in the same molecule. This allows them to react much faster, and they “detonate.” Detonation involves supersonic shock waves that pass through the material, causing chemistry that happens quite a bit faster than burning.
Is it possible to outrun a nuke?
A government safety expert says it’s entirely possible to survive a nuclear explosion and its aftereffects. The prospects for survival are even better if there are several minutes of warning, something Hawaii’s ballistic-missile-threat system can provide.
How fast is quicksilver in mph?
This would make Quicksilver’s speed 4091 m/s (9151 mph).
How fast is an explosion shock wave?
about 340 meters per second