What do these two changes have in common? making jam boiling an egg Select all that apply. Both conserve mass. Both are caused by cooling. Both are chemical changes.

Both **"Both conserve mass"** and **"Both are chemical changes"** are applicable to making jam and boiling an egg. 1. **Both conserve mass**: - In a closed system, mass is conserved during both making jam and boiling an egg. Even though making jam involves the evaporation of water, if the system is considered closed, the mass change accounts for all components. 2. **Both are chemical changes**: - **Making Jam**: This process involves the breakdown of pectin and the formation of new chemical structures as the fruit cooks and thickens with sugar. - **Boiling an Egg**: Heating an egg causes the proteins to denature and coagulate, resulting in a chemical transformation. **"Both are caused by cooling"** is **not** correct because: - **Making Jam** typically involves heating to cook the fruit and dissolve the sugar. - **Boiling an Egg** obviously requires heating to cause the proteins to coagulate. ### **Correct Answers:** - Both conserve mass. - Both are chemical changes.