Question

Indicate which of the following are physical or chemical changes:

rotting apples
making snowflakes
baking a cake

Answer 1

Rotting apples represent a chemical change due to decomposition, making snowflakes is a physical change as water changes state, and baking a cake is a chemical change as ingredients react to form a new substance.

Step-by-step explanation:

Let's classify each given scenario as either a physical change or a chemical change:

• Rotting apples: This is a chemical change because the apple's composition is changing as it decomposes, and new substances are formed.
• Making snowflakes: This is a physical change because water vapor in the air is simply changing state to form solid snowflakes. No new substances are created; the molecular structure of water (H2O) remains the same.
• Baking a cake: This is a chemical change because the ingredients undergo chemical reactions when heated to produce a new substance, which is the baked cake.