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It is a physical change, because it does not change in substance. A penny, whether in its normal state or flattened, is still a penny. Similarly, if you drop a watermelon and it breaks apart, that is also considered to be a physical change because it is still a watermelon.
Things are considered to be chemical changes when the substance changes into something new, and is commonly classified as irreversible. When an object rusts, it is considered to be a chemical change. Chemical changes are associated with a temperature change, or a color change or bubbling or something of the sort. Physical changes deal with physical changes in state, for example, ice melting, or in the example you provided, a penny being flattened.
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Why did the penny formula change?
cause the value of the penny was more then wat it was worth
What is a sentence for penny?
100 penny makes a dollar. Every penny counts, my friend!
What is the control on the penny water drops experiments?
In this experiment, the control group would be the penny! The independent variable is the substance/water on the penny, and the dependent is how many drops the penny takes.
What happens if you eat a penny?
You pass a penny.You pass a penny.
How many centimeters is 1 penny?
how many centimeters is a penny
Is salt and vinegar removing tarnish from a penny a physical change?
Physical change
Is a blackened penny a physical or chemical change?
Chemical
Is putting a penny in lemon juice a physical or chemical change?
physical reaction
Is a copper penny turning dark a chemical change or physical change?
Chemical.
Is cleaning a penny a chemical change or a physical change?
this is my homework just give the answer already!
Is cleaning a penny with vinegar and salt a physical or chemical change?
It is a chemical reaction and this is the correct way to spell penny!
Why does a penny rust faster in coca cola?
Sugar reaches the copper and they form a physical change
How big will a british penny be if flattened?
It would depend on how enthusiastically you flattened it. Like a jeweller hammering out gold leaf, you could probably make it about a quarter the size of a tennis court if you had sufficient patience and skill.
How is physical change and chemical change different?
A physical change is when some thing's shape or volume is changed. But a chemical change is a reaction between two or more objects to create something new and you can't get back what you originally started with.
What are the release dates for Mike Hammer Private Eye - 1997 A Penny Saved 1-9?
Mike Hammer Private Eye - 1997 A Penny Saved 1-9 was released on: USA: 23 November 1997
Is dropping a penny into a glass of water a physical change?
Yes
Is penny in vinegar a physical change?
No - it's a chemical change. The acid in the vinegar eats away the outer layer of grime and a microscopically thin layer of metal - revealing the clean coin underneath.
