Sillybutt100
  • Sillybutt100
Can someone please check my answer? How are physical and chemical changes similar? Neither can change the number of atoms of each element that are present. Neither can cause chemical bonds to break. Neither can result in a phase change. <------- Neither can cause a substance to give off heat or light.
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
can't chemical changes cause chemical bonds to break?
Sillybutt100
  • Sillybutt100
Yes but physical changes can't
anonymous
  • anonymous
oh is this an mcq question?

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Sillybutt100
  • Sillybutt100
What is mcg?
anonymous
  • anonymous
multiple choice question, i'm wondering because there are 4 answers there and you put your arrow on the third one as if to select it
Sillybutt100
  • Sillybutt100
Yes
anonymous
  • anonymous
physical changes may involve changing of physical properties, for example melting. so the answer is not the 3rd choice
Sillybutt100
  • Sillybutt100
My second choice is the 4th choice
anonymous
  • anonymous
Exothermic reactions give off heat, so some chemical reactions may give off heat.
Sillybutt100
  • Sillybutt100
Then is it the first one?
anonymous
  • anonymous
Yeap
Sillybutt100
  • Sillybutt100
Thank you!!
anonymous
  • anonymous
np :)

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