Science nerds: physical vs. chemical change

MrsSR

if adding salt to water is a physical change, what about making something like lemonade?  Is that physical as well, or can't you get the lemonade mix out of the water? 

I hate physical and chemical changes.  Too much thinking required.

hermione76

I am pretty sure it's chemical. 

J+MS

savannah_girl:

Im saying its physical. It disolves (like salt to water), and you still have H20  with sugar and lemon juice. It doesnt change the chemicals at the end of the day.

That's what I was thinking. I don't think it changes the chemical structure of the water and lemon juice.

hermione76

Maybe I am crazy. lol I took Physical Science like 7 years ago. I just thought that if you can't separate the two it was chemical. 

MrsJOSEnADRI

It's physical because a chemical change would make something new (i.e., vinegar and baking soda which are liquid and solid make something new-the gas).  The lemonade is still basically water and lemonade powder.  

hippotree

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

jamiemsmith

hermione76:

Maybe I am crazy. lol I took Physical Science like 7 years ago. I just thought that if you can't separate the two it was chemical. 

You can use titration to separate them back out. I'm not sure if you could get the same volume back out though. This is stumping me. I feel ignorant-- da dum ching.

hermione76

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

 Makes sense! 

J+MS

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

smarty pants with your fancy degree and stuff.

hippotree

J+MS:

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

smarty pants with your fancy degree and stuff.

This is the first time it's been useful in months.  LOL.

OctoberBabyH

By lemonade do you mean lemonade mix?

Real lemonade consists of sugar and lemon juice. The sugar changes physical form but the lemon juice stays a liquid.

It's physical.

ETA: A component of it is physical (meaning the sugar part.)

J+MS

hippotree:

J+MS:

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

smarty pants with your fancy degree and stuff.

This is the first time it's been useful in months.  LOL.

You mean you aren't teaching H & B the periodic table? photosynthesis?

hippotree

J+MS:

hippotree:

J+MS:

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

smarty pants with your fancy degree and stuff.

This is the first time it's been useful in months.  LOL.

You mean you aren't teaching H & B the periodic table? photosynthesis?

Oh we covered those ages ago.  Now we're on the Krebs cycle.

J+MS

hippotree:

J+MS:

hippotree:

J+MS:

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

smarty pants with your fancy degree and stuff.

This is the first time it's been useful in months.  LOL.

You mean you aren't teaching H & B the periodic table? photosynthesis?

Oh we covered those ages ago.  Now we're on the Krebs cycle.

Tough stuff! Now if they master Organic chem, they will be a step ahead of me. LOL

KJmashup

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

*draws hearts around Hippo's name on TB sticky note and places it back on the monitor* 

J+MS

KJmashup:

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

*draws hearts around Hippo's name on TB sticky note and places it back on the monitor* 

::dead::

hippotree

KJmashup:

hippotree:

It's a physical change.  If you let the water evaporate, the lemonade crystals would still be there.

 

*draws hearts around Hippo's name on TB sticky note and places it back on the monitor* 

::waggles eyebrows at KJ::