instance_of barium chlorate
Fireworks are a ___MASK80___ of low explosive pyrotechnic devices used for aesthetic and ___MASK70___ purposes . The most common use of a firework is as ___MASK35___ of a fireworks display ( also called a fireworks show or pyrotechnics ), a display of the effects produced by firework devices . Fireworks competitions are also regularly held at a number of places . An airbag is a type of ___MASK15___ safety device and is an occupant restraint system . The airbag module is designed to inflate extremely rapidly then quickly deflate during a collision or impact with a surface or a rapid sudden deceleration . It consists of the airbag cushion , a flexible fabric bag , inflation module and impact sensor . The purpose of the airbag is to provide the occupants a soft cushioning and restraint during a crash event to prevent any impact or impact - caused injuries between the flailing occupant and the interior of the ___MASK15___ . The airbag provides an energy absorbing surface between the ___MASK15___ ' s occupant and a steering wheel , instrumental panel , A - B - C - structural body frame pillars , headliner and windshield / windscreen . Tin is a ___MASK59___ with the ___MASK26___ Sn ( for ) and atomic number 50 , is a post - transition metal in group 14 of the periodic ___MASK3___ . It is obtained chiefly from the mineral cassiterite , which contains tin dioxide , SnO . Tin shows a chemical similarity to both of its neighbors in group 14 , germanium and lead , and has two main oxidation states , + 2 and the slightly more stable + 4 . Tin is the 49th most abundant element and has , with 10 stable isotopes , the largest number of stable isotopes in the periodic ___MASK3___ , thanks to its magic number of protons . It has two main allotropes : at room temperature , the stable allotrope is  - tin , a silvery - white , malleable metal , but at low temperatures it transforms into the less dense grey  - tin , which has the diamond cubic structure . Metallic tin is not easily oxidized in air . Barium chlorate , Ba ( ClO3 ) 2 , is a white crystalline solid , the barium salt of chloric ___MASK65___ . It is an irritant and toxic , as are all soluble barium compounds . It is sometimes used in pyrotechnics to produce a green color . It also finds use in the production of chloric ___MASK65___ . In chemistry , an oxidizing agent ( oxidant , oxidizer ) is a substance that has the ability to oxidize other substances ( ___MASK82___ them to lose electrons ). Common oxidizing agents are oxygen , hydrogen peroxide and the halogens . Barium is a ___MASK59___ with ___MASK26___ Ba and atomic number 56 . It is the fifth element in Group 2 , a soft silvery metallic alkaline earth metal . Because of its high chemical reactivity , barium is never found in nature as a free element . Its hydroxide , known in pre - modern ___MASK8___ as baryta , does not occur as a mineral , but can be prepared by heating barium carbonate . The alkaline earth metals are ___MASK30___ chemical elements in column ( group ) 2 of the Periodic ___MASK3___ . They are beryllium ( Be ), magnesium ( Mg ), calcium ( Ca ), strontium ( Sr ), barium ( Ba ), and radium ( Ra ). They have very similar properties : they are all shiny , silvery - white , somewhat reactive metals at standard temperature and pressure . A ___MASK79___ ( from Greek  " métallon ", " mine , quarry , ___MASK79___ ") is a material ( an element , compound , or alloy ) that is typically hard , opaque , shiny , and has good electrical and thermal conductivity . Metals are generally malleable  that is , they can be hammered or pressed permanently out of ___MASK57___ without breaking or cracking  as well as fusible ( able to be fused or melted ) and ductile ( able to be drawn out into a thin ___MASK97___ ). About 91 of the 118 elements in the periodic ___MASK3___ are metals , the others are nonmetals or metalloids . Some elements appear in both metallic and non - metallic forms . The chlorate ___MASK1___ has the formula . In this case , the chlorine atom is in the + 5 oxidation state . " Chlorate " can also refer to chemical compounds containing this ___MASK1___ ; chlorates are the salts of chloric ___MASK65___ . " Chlorate ", when followed by a Roman numeral in parentheses , e . g . chlorate ( VII ), refers to a particular oxyanion of chlorine . An ___MASK16___ is an acid that contains oxygen . Specifically , it is a compound that contains hydrogen , oxygen , and at least one other element , with at least one hydrogen atom bound to oxygen that can dissociate to produce the H ___MASK17___ and the anion of the acid . In chemistry and ___MASK91___ , the atomic number of a chemical element ( also known as its proton number ) is the number of protons found in the nucleus of an atom of that element , and therefore identical to the charge number of the nucleus . It is conventionally represented by the symbol Z . The atomic number uniquely identifies a chemical element . In an uncharged atom , the atomic number is also equal to the number of electrons . Barium carbonate ( BaCO ), also known as witherite , is a ___MASK73___ used in rat poison , bricks , ceramic glazes and cement . The oxidation ___MASK78___ , often called the oxidation number , is an indicator of the degree of oxidation ( loss of electrons ) of an atom in a ___MASK73___ . Conceptually , the oxidation ___MASK78___ , which may be positive , negative or zero , is the " hypothetical " charge that an atom would have if all bonds to atoms of different elements were 100 % ionic , with no covalent component . This is never exactly true for real bonds . Chlorine is a ___MASK59___ with ___MASK26___ Cl and atomic number 17 . The second - lightest of the halogens , it appears between fluorine and bromine in the periodic ___MASK3___ and its properties are mostly intermediate between them . Chlorine is a yellow - green gas at room temperature . It is an extremely reactive element and a strong oxidising agent : among the elements , it has the highest electron affinity and the third - highest electronegativity , behind only oxygen and fluorine . Pyrotechnics is the ___MASK43___ of using materials capable of undergoing self - contained and self - sustained exothermic chemical reactions for the production of heat , light , gas , smoke and / or ___MASK36___ . Its etymology stems from the Greek words " pyro " (" fire ") and " tekhnikos " (" made by art "). Pyrotechnics include not only the manufacture of fireworks but items such as safety matches , oxygen candles , explosive bolts and fasteners , components of the automotive airbag and gas pressure blasting in mining , quarrying and demolition . An ___MASK100___ or oxoanion is an ion with the generic formula ( where A represents a chemical element and O represents an oxygen atom ). Oxoanions are formed by a large majority of the chemical elements . The formulae of simple oxoanions are determined by the ___MASK92___ rule . The structures of condensed oxoanions can be rationalized in terms of AO polyhedral units with sharing of corners or edges between polyhedra . The ___MASK51___ and polyphosphate esters adenosine monophosphate ( AMP ), adenosine diphosphate ( ADP ) and adenosine triphosphate ( ATP ) are important in biology . Etymology is the ___MASK32___ of the ___MASK8___ of words , their origins , and how their form and meaning have changed over time . By extension , the term " the etymology ( of a word )" means the origin of the particular word . A ___MASK45___ is a naturally occurring ___MASK73___ , usually of crystalline form and abiogenic in origin . A ___MASK45___ has one specific chemical composition , whereas a rock can be an aggregate of different minerals or mineraloids . The study of minerals is called mineralogy . A ___MASK59___ or element is a ___MASK58___ of atoms having the same number of protons in their atomic nuclei ( i . e . the same atomic number , " Z "). There are 118 elements that have been identified , of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements . There are 80 elements that have at least one ___MASK10___ and 38 that have exclusively radioactive isotopes , which decay over ___MASK89___ into other elements . Iron is the most abundant element ( by mass ) making up Earth , while oxygen is the most common element in the Earth ' s crust . A ___MASK73___ ( or just compound if used in the context of chemistry ) is an entity consisting of two or more atoms , at least two from different elements , which associate via chemical bonds . There are four types of compounds , depending on how the constituent atoms are held together : molecules held together by covalent bonds , ionic compounds held together by ionic bonds , intermetallic compounds held together by metallic bonds , and certain complexes held together by coordinate covalent bonds . Many chemical compounds have a unique numerical identifier assigned by the Chemical Abstracts Service ( CAS ): its CAS number . Chloric ___MASK65___ , HClO , is an ___MASK16___ of chlorine , and the formal precursor of chlorate salts . It is a strong ___MASK65___ ( p " K "   ___MASK69___ ) and oxidizing agent .