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lesya692 [45]
3 years ago
6

You get a can of soda from the vending machine and your “friend” maliciously shakes it when you’re not looking. You open the can

of soda and it fizzes all over your desk, making you regret you had brought it to lab in the first place. Is this a chemical change or a physical change? Explain your answer.
Chemistry
2 answers:
vaieri [72.5K]3 years ago
8 0
Physical Change because a new substance was not created and if it was a chemical change, a new substance would have to be created.
Galina-37 [17]3 years ago
3 0

Answer: physical change

Explanation:

A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.

Example: Melting of ice

A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.

Example: Corrosion of iron

It is given that the soda can fizzes when it is opened, which means the gas which has been dissolved in soda under high pressures now comes out of the soda due to low pressure. Thus as there is no chemical reaction involved here, this is a physical change.

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In what type of climate do trees produce narrower rings?
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Fill in the missing information:
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Answer: 1. Complete Nuclear Symbol : _{22}^{48}{Ti^{4+}}

2. Atomic number : 22

3. Mass number : 48  

4. Charge : 4 +

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Atomic number is equal to the number of protons.

Mass number is the sum of number of neelectrons. utrons and number of protons.

Given : no of protons = 22 , thus atomic number = 22

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Also for a neutral atom , the number of protons is equal to the number of electrons. But here electrons are 4 less than protons, which means the atom has lost 4 electrons and thus will have a charge of 4+.

The atomic number is specific to an element, and the element with atomic number 22 is Titanium (Ti). The representation is _{22}^{48}{Ti^{4+}}

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