X1011706934-00223-52181</DOCNO>FLAMING RAG CONCEPTS: energy, changes of state, burning BACKGROUND:burning produces heat energy, but a change of state from liquid to gas absorbs energy SUBSTANCES NEEDED:water, alcohol, salt EQUIPMENT NEEDED: tongs or pliers, lighter, dish, small rag or handkerchief PREPARATION: mix a cup of alcohol and a cup of water, then add a teaspoon of salt and dissolve.
(ACKGROUND:burning; produces; heat energy) (burning BACKGROUND:burning produces heat energy, but a change of state from liquid to; absorbs; energy SUBSTANCES) (</DOCNO>; add; a teaspoon of salt and dissolve; T:then)
ACKGROUND:burning burning BACKGROUND:burning produces heat energy, but a change of state from liquid to </DOCNO>
produces absorbs add
heat energy
energy SUBSTANCES
a teaspoon of salt and dissolve T:then