The temperature at 300 seconds (minutes) is the final temperature of both the metal and the water record to it the nearest 0.1°c in the data table

subtract to find the final temperature changes for the water and the metal

∆T (water)=°c

∆T (metal)=°c

Aluminum: Water: 4.7 Metal: 72.9

Copper: W:1.9 M: 75.4

Explanation:

Iron:W:2.4 M:75.1

Lead: W: 0.7 M: 76.1

The first set of question Water: 4.7 Metal: 72.9

the second question Water 1.9 Metal 75.4

Explanation:

the answer is a. co2, this would be colder than the : )

explanation:

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e