What type of change is the process of solid ice changing into liquid water?

Chemistry

2 answers:

stealth61 [152]3 years ago

6 0

I believe it is a physical change.

romanna [79]3 years ago

4 0

It is a physical change since there is no new product that is evolved.

It is not exothermic as it doesn’t give out heat, it absorbs heat (it is endothermic).

It is not ionic as it is not related to bonds.
It’s just H2O in both cases.

It is not a chemical change as there is no new product evolved.

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<h2>The compound formed is NaCl and $CaCl_{2}$ </h2>

Explanation:

PART 1:

Atomic number of sodium is 11.
Sodium(Na, Z = 11, Group 1A) will lose 1 electron to become $Na^{1+}$ which is isoelectronic to Neon (Ne ,Z = 10).
The symbol for the sodium ion is $Na^{+}$ .
Chlorine atom ( $Cl$ , Z = 17, Group 7A or 17) gains 1 elecron to be isoelectronic to neon.
The symbol for the compound formed is NaCl.
PART 2:
Atomic number of calcium is 20
Calcium(Ca, Z = 20 ,Group 2A) will lose two electrons to become $Ca^{2+}$ which is isoelectronic to argon.
The symbol for the ion is $Ca^{2+}.$
Two chlorine atoms (Cl, Z = 17, Group 7A or 17) each gains one electron to be isoelectronic to argon(Z = 18)
The symbol for the compound formed is $CaCl_{2}$ .