Question

1. The students were given the task of finding the density of a brownie. Johnny decided to eat ½ of his brownie before conducting his experiment. How would Johnny’s results compare with the rest of the class?

Answer 1

Jonnys answer would be the same as his classmates because density does not depend upon the amount or size of a substance but on the composition of the substancw

Answer 2

Answer:

Johnny's result will be identical compared with rest of class

Explanation:

• Density is the ratio of mass to volume
• If mass increases/decreases then volume also increases/decreases proportionally. Hence density remains constant
• Johnny ate half of it's brownie. So mass of brownie becomes half of it's original mass. Volume of brownie also becomes half of it's original mass
• Density of brownie = $\frac{(mass)_{brownie}}{(volume)_{brownie}}=\frac{\frac{(mass)_{brownie}}{2}}{\frac{(volume)_{brownie}}{2}}$
• So Johnny's result will be identical compared with rest of class.