chemical reactions and equations test (only notes/symbols)

what do all chemical formulas and reactions use?

letters, numbers, and sometimes additional info

what does this "→" mean

proceeding in a forward direction

what does "↑" mean

releasing a substance to the environment

what does "⇆" mean

reaction can go both directions, proceed or reverse

what does "↓" mean

something is settling out (precipitate) solid

what does (aq) mean

aqueous - being dissolved in water

what does this mean △
➝

substance(s) are being heated

what must chemical reactions follow

law of conservation of mass

when balancing chemical equations you must never _______

change the subscript for formula

what can you only adjust in balancing a chemical equation

the coefficient of the formula

what do you save for last when balancing

oxygen

what is usually balanced first

carbon

what is synthesis

putting together of two or more substances to form a new compound

what is an example of synthesis

A + B --> AB

what is decomposition

single compound that undergoes a reaction that produces two or more simplest substances

what is an example of decomposition

AB->A+B

what is single displacement/replacement

one element replaced another element (a similar element) in a compound

what is an example of single displacement/replacement

A + BX --> AX + B

what is double displacement/replacement

double replacement of elements to form two new compounds

what is an example of double displacement/replacement

AX + BY --> AY + BX