Chemistry, 18.01.2020 03:31 jerrym163176

When sodium metal is added to water, an orange flame is observed on the metal surface. based on this observation, what can best be concluded?

a physical change occurs because the metal gets smaller.
a chemical reaction occurs because the liquid becomes cloudy.
a chemical reaction occurs because heat and light are given off.
a physical change occurs because vapor is released into the air.

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