Grade 8 Science and Technology/Engineering Test
Grade 8 Science and Technology/Engineering Test
Grade 8 Science and Technology/Engineering Test
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<strong>Science</strong> <strong>and</strong> <strong>Technology</strong>/<strong>Engineering</strong>Session 2ID:229403 3152050_AR1.eps A Common●26The diagram below shows a balance being used to measure a burning c<strong>and</strong>le in a sealed glass ballbefore <strong>and</strong> after the burning is complete.BeforeAfterAs the c<strong>and</strong>le burns, the size of the c<strong>and</strong>le decreases, but the reading on the balance does notchange. Which of the following is demonstrated by this experiment?A. The total mass of the system is constant.B. Energy is converted to mass when the c<strong>and</strong>le is burned.C. Smoke particles have more mass than molecules of c<strong>and</strong>le wax.D. Kinetic energy is converted to potential energy when the c<strong>and</strong>le is burned.411
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