christineachord christineachord

08-12-2021
Physics

contestada

Are these a Chemical or Physical Change??

1. Sodium Bicarbonate breaks down into sodium carbonate and water.
A. Chemical Change
B. Physical Change

2. Mercury is cooled until it is in the solid state.
A. Chemical Change
B. Physical Change

Respuesta :

carmen469 carmen469

08-12-2021

1. chemical change, as it is the breaking of bonds

2. physical change, as it is a change in temperature

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