Answer : is an ionic compound.
Explanation :
As we know that the cesium is the alkali metal having the atomic number 55 and belongs to group 1. The symbol of cesium is, (Cs). The stable oxidation state of strontium is (+1).
The molecule carbonate is the non-metal polyatomic ion. The stable oxidation state of carbonate ion is, (-2).
When the cesium combine with the carbonate ion, it forms cesium carbonate. It is an ionic compound in which the a metal react with the non-metal and combine with the an ionic bond by the criss-cross method.
Hence, is an ionic compound.
Answer: Ice is melting due to the transfer of thermal energy from Jan's hand to ice.
Explanation: The melting of ice is a physical change and is happening when the thermal energy from Jan's hand is transferred to ice. Due to this energy transfer, the particles of ice starts to move faster and hence, making the ice melt.
In this, the physical state of ice is changing from solid to liquid state.