1. TEKS 2.7A Observe, measure, record, analyze, predict, and illustrate changes in size, mass, temperature, color, position, quantity, sound, and movement.

2. Change in temperature occurs when heat is added or taken away from matter.

3. When heat is added, the temperature of matter increases and it often changes the shape of that substance — such as when ice is left on the counter for a long period of time. When heat is added, the temperature of matter increases and it often changes the shape of that substance — such as when ice is left on the counter for a long period of time.

4. The shape of an object will sometimes change when heat is taken away and the temperature decreases such as when water freezes into ice. The shape of an object will sometimes change when heat is taken away and the temperature decreases such as when water freezes into ice.

5. When a popsicle is left in the sun, which of the following is likely to be observed? When a popsicle is left in the sun, which of the following is likely to be observed? A. Change in temperature with no change in shape. B. Change in temperature with a change in shape. C. Change in mass with no change in shape. D. Change in mass with a change in shape.

6. A.Incorrect, the shape changes as the popsicle melts. A.Incorrect, the shape changes as the popsicle melts. B.Correct, the temperature and the shape of the popsicle will change. B.Correct, the temperature and the shape of the popsicle will change. C.Incorrect, there will be a change in shape. C.Incorrect, there will be a change in shape. D.Incorrect, mass will not change. D.Incorrect, mass will not change.

7. This table shows the temperature change of an unknown liquid over an 8-minute period. Time (minutes) Temperature (  C) 210 440 6 ? 8 100

8. What will the temperature be after 6 minutes? A. 20° B. 60° C. 70° D. 90° Time (minutes) Temperature (  C) 210 440 6 ? 8 100

9. A. 20° C is incorrect. This temperature is lower than the temperature at the 2 and 4-minute intervals. A. 20° C is incorrect. This temperature is lower than the temperature at the 2 and 4-minute intervals. B. 60  C is incorrect. This temperature is not 30 degrees greater than the previous temperature of 40  C. B. 60  C is incorrect. This temperature is not 30 degrees greater than the previous temperature of 40  C. C. 70  C is correct. This temperature increase is 30 degrees greater than the previous and 30 degrees less than the next temperature. C. 70  C is correct. This temperature increase is 30 degrees greater than the previous and 30 degrees less than the next temperature. D. 90  C is incorrect. This temperature is only 10 degrees lower than the final temperature. D. 90  C is incorrect. This temperature is only 10 degrees lower than the final temperature. Based on the data in the chart, it appears that the liquid’s temperature changes 30  at each two- minute interval. Keep this in mind as you read the following statements.