Keep Track of Mass in a Closed Container - Practice 2

5 questions0m 0s

Learn the skill

For these paper models, nothing enters or leaves a sealed container and the container stays on the balance. Changing a sample's shape or state does not remove its mass. Include the container consistently.

Worked example

A sealed container and ice have a total mass of 80 g. After the ice melts with no loss, the total remains 80 g.

Level-balance schematic compares Before: 80 g with After: 80 g. Condition: Ice melts inside. The level beam represents equal total mass; shapes are not drawn to scale.

Question 1 A sealed container and its ice have total mass 90 g. The ice melts; nothing enters or leaves. What is the final total mass in g? Answer

Question 2 A sealed container and its ice have total mass 100 g. The ice melts; nothing enters or leaves. What is the final total mass in g? Answer

Question 3 A sealed container and its ice have total mass 110 g. The ice melts; nothing enters or leaves. What is the final total mass in g? Answer

Question 4 A sealed container and its ice have total mass 120 g. The ice melts; nothing enters or leaves. What is the final total mass in g? Answer

Question 5 A sealed container and its ice have total mass 130 g. The ice melts; nothing enters or leaves. What is the final total mass in g? Answer