Ages 10–11🔬 Science12 verified questions on this shelf

Conservation of Mass

Measure and provide evidence that the total weight of matter is conserved regardless of the type of change (heating, cooling, or mixing)

Try three questions

Tap an answer to check it. Every question and explanation was checked by independent verifiers that must agree.

Question 1 of 3

Sam measured the mass of a cup of water and a cup of oil before mixing them. The water weighed 120 g and the oil weighed 80 g. After mixing the two liquids in the same cup, Sam measured the total mass and recorded 200 g. Which statement best describes what Sam’s measurements show?

Question 2 of 3

A student weighs a metal block and records a mass of 120 g. The student then heats the block on a stove and weighs it again. Which statement best provides evidence that the total weight of matter is conserved during heating?

Question 3 of 3

A student conducts an experiment. First, she measures the mass of a 30‑gram piece of ice and records 30 g. She lets the ice melt into water and measures the mass again, recording 30 g. Then she adds 20 g of salt to the water and measures the total mass, recording 50 g. Which statement is best supported by these measurements?

Keep going on this shelf

A free account keeps practising Conservation of Mass with 12 verified questions, tracks the Skill as it blooms, and connects a real teacher when you want one. Every student account needs a parent's email first.

Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.