Question

unit 6: chemical reactions lab 3- chemical reactions - applying to the real world
think about the five signs of a chemical reaction. identify 2 or 3 times you have seen these in real life. explain it below and include evidence to support that this is a chemical change not a physical change.
being more energised after eating because my body breaks down the sugars

Explanation:

When sugar is broken down in the body, a chemical reaction occurs. Physical changes involve changes in state or appearance without altering the substance's chemical composition. In digestion, enzymes break down complex sugars (like starch) into simpler sugars (like glucose). This is a chemical change as new substances (metabolic by - products) are formed, and energy is released (which is a sign of a chemical reaction - production of energy).

Answer:

Digestion of sugars in the body is a chemical change. Evidence: New substances (metabolic products) are formed, and energy is released (a sign of a chemical reaction).