Market [!def] The market for a good or service consists of all those producers willing and able to supply, and consumers is willing and able to buy. C

[!def] The willingness and ability of firms to supply goods and services at a given price The law of supply [!def] There is a direct relationship betw

If demand is relatively elastic a small change in price cause relatively large change in demand If demand is relatively inelastic a small change in pr

Market Equilibrium [!def] Market Equilibrium Where demand equals supply, and there is no tendency for price or quantity to change [!def] Equilibrium A

Market Failure [!def] Market failure misallocation of resources Misallocation: Where resources are not used to maximise society’s welfare will happen

Analysis The analysis stage of the program development life cycle is to precisely understand the problem the program is intended to solve Abstraction

Datatype Constant constant is a named piece of memory where the value cannot be changed while a program runs Variable a named storage unit with a valu

Filtration This technique is used to separate an insoluble solid from a liquid. (将不可溶解固体从液体中分离) It can be used to obtain a product that is free from u

Phase Transition Vaporisation: evaporation and boiling States Shape Volume Compress Particles Solid Fixed Fixed

Ionic bonding [!def] metal atoms react with non-metal atoms Metal atoms lose, non-metal atoms gain their outer electrons to form ions The positive and