Adrenaline gives you energy and stimulates your heart. When in stressful situations, like survival, you’re body is reacting and releasing this hormone.
Answer:
(1) breaking a pencil (2) rusting of iron
Explanation:
breaking a pencil does not alter the chemical properties of the pencil, it merely breaks it into 2 while the rusting of iron is changing the properties chemically because the iron is oxidizing and reacting with the water and oxygen in the atmosphere
you are right on all the ones you did