CHEMISTRY HIGH SCHOOL

29. Some physical changes involve chemical reactions.
TRUE
FALSE

Answers

Answer 1
Answer: True. Some physical changes involve chemical reactions. Ice melting is an example of a chemical change in matter

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What two things determine whether a molecule is polar?Check all that apply. A.The size of the atoms that make up the molecule B.Whether or not there are bonds of two atoms of unequal electronegativity C.Whether there is a double bond D.The shape of the molecule

Answers

its B and C 
if ur looking for 2 options 

Answer:B & D

Explanation:

GUYS HELP ME PLEASE. MY TEACHER IS GONNA KILL ME IF I DONT SOLVE THIS RIGHT. Write the election configuration (H, Al, S,CI, Ni)

Answers

Explanation:

1s 2s 2p

1s 2s 2p1s2 2s1

1s 2s 2p1s2 2s1 2 1 1

1s 2s 2p1s2 2s1 2 1 11s2 2s2

Chemical changes ________ involve the breaking and making of chemical bonds.A) Always
B) Never
C) Sometimes

Fill in the blank

Answers

The correct answer that would best complete the given statement above would be option A. Chemical changes ALWAYS involve the breaking and making of chemical bonds. When there is chemical change, a new compound is being formed. If a new compound is not formed, then it is not considered as a chemical change. When a new compound is formed, therefore, there is the breaking and making of chemical bonds. Hope this helps.

Answer:

A:  Always.

Explanation:

Got it correct on Oddesyware

A similarity between the forces involved in both ionic and covalent bondingis that bothO A) involve the sharing of electrons.O B) involve the transfer of electrons.O C) involve the attraction of opposite charges.requre same amountof energy toereakther bonds

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Stating the difference between covalent and ionic bonding....

ionic bonds consist of the transfer of electrons, and covalent consists of the sharing of electrons.

This being said..answer choices A and B are out of the picture.

Thus, answer choice C is your answer.

Involve the attraction of opposite charges;require same amount of energy to break their bonds.

Evaluate these two sound waves and determine what property they have In common

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Answer:

The same wavelength

Explanation:

The two sound waves shown in the diagram has the same wavelength as clearly shown.

  • Wavelength of a wave is the distance between a complete wave cycle.
  • It is the difference between successive train of troughs and crests.
  • In the figure shown the amplitude, vertical displacement of the wave differs.
  • But the wavelength of the waves are the same.

Convert 35 miles (mi) to m

Answers