what physical and chemical changes would occur when i:
lit a candle?
Poured vinegar into crushed chalk?
Put two drops of iodine into .5g of corn starch mixed with 100mL of water?
Dropped one denture cleanser into 200mL of water?
Added 3 drops of phenolphthalein into 5mL of milk of magnesia?
Added 5ml of ammonia to 5mL of Iron(III) chloride?
(two of these do not have any physical changes)
can you help?
thanks:D
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Verified answer
Physical change=change in size, shape, solution, and state, same materials
Chemical change=color change, gas given off, precipitate formed,great eat exchange, new material
The burning of a candle is chemical
vinegar on chalk will release CO2 gas, chemical
iodine on starch will turn black, chemical
dissolving denture cleanser is physical, if bubbles occur, then chemical
phenolphthalein turns color, chemical
ammonia and iron chloride will react and change color, chemical
when u move ur arm its a physical change or anything that you do is physical. chemical change is when say i put baking soda in vinegar it changes because its a chemicals. for example you use your hand to light a match thats physical. when it lights it makes a fire called chemical. get it?