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frutty [35]
3 years ago
8

Which of these is an example of a physical change ?

Chemistry
1 answer:
Licemer1 [7]3 years ago
4 0

Answer:

Paper folding into origami

Explanation:

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For it to be the same element it must contain the same number of protons
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Conservation of matter article questions
elena-14-01-66 [18.8K]

The Law of conservation of mass states that  option C: matter is neither created nor destroyed.

<h3>What is the law of conservation of matter?</h3>

Physical and chemical changes can cause matter to transform into different forms, but no matter what happens, matter is always conserved. There is no creation or destruction of matter; the amount of matter is the same before and after the transformation.

The principle of matter conservation. argues that matter cannot be generated or destroyed during a chemical reaction. The same number of atoms exist before and after the alterations even though the matter may shift from one form to another. reactant.

Therefore, According to the principle of mass conservation, neither chemical processes nor physical changes can create or destroy mass in an isolated system. The mass of the products and reactants of a chemical reaction must be equal, in accordance with the law of conservation of mass.

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See full question below

1. Multiple-choice

Q.

Conservation of matter article questions

Law of conservation of mass states that

answer choices

matter is created

matter is destroyed

matter is neither created nor destroyed

matter does not change

3 0
1 year ago
Which diagram best represents light being reflected after striking the flat surface of a mirror
masya89 [10]
It 1
cause yea it is im doing it in class and the answers is 1

5 0
3 years ago
A compound has the formula C8H8 and does not contain any double or triple bonds. All the carbon atoms are chemically identical a
Ann [662]

Answer:

<h3>There's no way for C8H8 to exist without double bonds. To fulfill the rule of the octet, four bonds must be formed by each carbon. This can only be done in C8H8 through the formation of double bonds.</h3>

Explanation:

7 0
3 years ago
Investigations were carried out in a science lab to explore the topic of chemical and physical changes. Investigation A Step 1.
Angelina_Jolie [31]

Answer : B) In step 2, there was a chemical change which was observed in sugar.

Explanation : In A step 2 there was a physical change that was seen. By just boiling the dissolved salt solution salt was obtained. Therefore, it is a physical change. In B step 2 there was a chemical change seen as sugar solution was thickened and turned brown. It was not obtained in its original form; there was a chemical reaction that took place during sugar evaporation. As chemical change is the one where the reaction is irreversible.

Therefore only in B step 2 there was a chemical change that was observed.

4 0
3 years ago
Read 2 more answers
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