To determine a change in an object's state of matter, we need to look for examples where the substance transforms from one state to another. Let's analyze each option:
1. Grinding ice to make snow:
- This process involves changing the physical form of water from solid (ice) to solid (snow) without altering its state of matter. Both ice and snow are in the solid state, so there is no change in state of matter.
2. A banana turning brown:
- This change is a result of chemical reactions causing the banana to decompose. It does not involve a change in state of matter.
3. Chilling an apple in the refrigerator:
- Cooling an apple in the refrigerator changes its temperature but not its state of matter. The apple remains in its solid state throughout this process.
4. Water turning to ice in the freezer:
- This scenario exemplifies a change in state of matter. Water (liquid) transforms into ice (solid) when it reaches its freezing point. The transformation from liquid to solid represents a change in state of matter.
Therefore, the correct answer to the question "Which of the following shows a change in an object's state of matter?" is:
- Water turning to ice in the freezer.
