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Warriorz13:
Which is a characteristic of a physical change? The chemical bonds in the substance are unchanged. The change cannot be seen. The molecules all move at the same speed. The substance has reacted with another substance.
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Warriorz13:
@SkyVoltage43 @JustSaiyan
JustSaiyan:
The chemical bonds in the substance are unchanged.
SkyVoltage43:
The chemical bonds in the substance are unchanged.
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