Chemistry Flashcards
Implosion
an instance of something collapsing violently inwards
Explosives
able or likely to shatter violently or burst apart.
Pressure
continuous physical force exerted on or against an object by something in contact with it.
Physical change
occur when objects or substances undergo a change that does not change their chemical composition . They are usually reversible.
Chemical reaction
a process in which one or more substances, the reactants, are converted to one or more different substances, the products.
Word equation
is an expression of a chemical reaction
Reactivity series
of metals is a chart listing metals in order of decreasing reactivity.
Oxidation
Gain of oxygen or loss of electrons
Reduction
is the gain of electrons, loss of oxygen
Sacrificial protection
is a corrosion protection method in which a more reactive metal is attached to a less active metal, preventing it from corroding.
Oxidising agent
Oxidising agents are substances that provide oxygen or accept/ gain electrons
Exothermic reaction
Exothermic reactions transfer energy to the surroundings and the temperature of the surroundings increases
Endothermic reaction
Endothermic reactions take in energy and the temperature of the surroundings decreases.
Hydrocarbon
a compound of hydrogen and carbon only
Displacement reaction
occurs when a more reactive element displaces, or pushes out, a less reactive element from a compound that contains the less reactive
Thermite reaction
A thermite reaction is a general name for an exothermic (heat-releasing) reaction between iron oxides and aluminium