Question

Dry concrete or cement dust is not as hazardous as new wet cement because ________.

1) it does not contain harmful chemicals
2) it has already cured and hardened
3) it is less likely to cause skin irritation
4) it does not release toxic fumes

Answer 1

1) it does not contain harmful chemicals. Dry concrete or cement dust is less hazardous than wet cement because it has cured and hardened, does not contain harmful chemicals, is less likely to cause skin irritation, and does not release toxic fumes.

Step-by-step explanation:

Dry concrete or cement dust is not as hazardous as new wet cement because it has already cured and hardened. When concrete cures, the chemical reaction called hydration occurs, where water reacts with the cement to form a solid structure. This process takes time, and once the concrete is dry, it no longer contains harmful chemicals and is less likely to cause skin irritation. Additionally, dry concrete does not release toxic fumes like wet cement does during the curing process.