Is it possible to have a chemical change without a physical change?

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Physical and Chemical Changes - MCWDN

Physical and Chemical Changes. When you have ... between a physical and chemical change in matter ... the substance changed back without ...

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Is it possible to change pixel size/count without changing physical image size and quality?

For example.. Here's the picture [ ] @ 900x800 And then here's the new one, edited [ ] @ 400x300 Same size, different pixels.. (Best way I could explain what I'm trying to ask) I have photoshop, but I cannot find a "How To" guide anywhere....

Answer:

It sounds like you resized the image, while reducing the Pixel density. You need to resize it but only...

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Easy: CHEMICAL OR PHYSICAL change ((3 short ?'s)) ?

this is a quiz that i got and my answers: V homogenous mixture - chemical V heterogenous mixture - physical X mixing sugar with water - physical V choking on a piece of meat - physical V healing of a wound - chemical V cutting a piece of paper - physical...

Answer:

for an apple decomposing you might also use the argument that there are bacteria at work that eat and...

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What is the difference between a physical change and chemical change?

HELP! I have a lab assignment and i don't know how to distinguish between the two types of changes! I know a new substance is produced when a chemical change occurs and a new substance isn't produced in a physical change but i don't know how to distinguish...

Answer:

Well with a physical change, the change is a result of breaking, boiling, melting, freezing, bending...

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Physical and Chemical change?

I have a few HW questions that im too lazy to do myself so plz help here they are!: The steel wool turned the black pot a shiny, silver color Chemical or Physical change? Lightning flashes across the sky Physical or Chemical? The piece of lemon turned...

Answer:

1 Physical, it is the friction that removes the dullness and not the cleanser. 2 Chenical and Physical...

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TRUE OR FALSE? is it a physical or chemical change?

CHEMICAL CHANGE CAN'T BE OBSERVED WITHOUT CHANGING THE MATERIAL ITSELF... I ANSWERED FALSE. THE "CHEMICAL" WAS UNDERLINED. AND I PUT PHYSICAL CHANGE. BUT RIGHT NOW I THINK I GOT IT WRONG AND I'M THINKING ITS A CHEMICAL CHANGE. WHICH ONE IS...

Answer:

with a physical change the material stays the same, just the shape or phase changes but with a chemical...

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Chemical change or physical change?

I wanna ask 2 questions: 1. is cooling a saturated copper sulphate solution to form crystals a physical change or chemical change 2. is heating lead oxide with carbon to extract lead a chemical change or physical change thats it, plz help me guys, I...

Answer:

Are you changing the substance when you cool copper sulphate solution?? No.. As a solution, copper and...

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Chemical or physical change?

I need to determine which is a chemical change & which is a physical change: tanning of your skin by the sun (I said physical) sap dripping from a pine tree (I said physical) recovery of turpentine from pine sap (I said chemical) mixing turpentine...

Answer:

Here's the key. If it's a chemical change, a new substance that was not there before is produced. Mixing...

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Chemical or physical change?

is toothpaste that you left in the sink that dried out and stuck like glue a physical or chem change? also wat about leaves changing colors in the fall? is it physical because changing color is usually physical change. scrambling an egg s physical or...

Answer:

The dried toothpaste in the sink is neither a physical or chemical change. It is a change in formulation...

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Is blending metal sheets a chemical or physical change?

also explain to me the diffirence between a physical change and a chemical changhe...also a chemical property and a physical property give examples please....and is belnding metal sheets chemical or physical property

Answer:

Physical change is something that doesn't actually change the object. The change can be undone. An example...

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