DeSSA Science Grade 5 Practice Questions - DeSSA Science - Grade 5 (Delaware System Of Student Assessments Science Summative) Exam

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A closed bottle holds air and a little water. The bottle is weighed, then shaken hard. No liquid or gas leaves the bottle. What happens to the total mass?

It decreases because shaking uses up matter It stays the same because matter is conserved in a closed system It increases because motion creates new mass It becomes zero because air has no mass

Correct Answer:

It stays the same because matter is conserved in a closed system

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