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Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. A physical change doesn’t break the bonds between atoms of a substance or form new ones. Compounds can be broken down by a chemical change. A chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. What simple substance would a compound break into? The basic elements that make it up! For example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. Which of the following is an example of a chemical change?

A
separating water into different glasses

B
breaking frozen ice cubes with a hammer

C
running an electric current through water

D
boiling water to evaporate it on a stove

2 Answers

0 votes

Answer:

c

Step-by-step explanation:

covalent bond and hydrogen bond

User Raph
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6 votes

Answer:

C because

Step-by-step explanation:

covalent bond and hydrogen bond Are both present Here so that will be your answer

User UnsignedByte
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9.1k points

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