A. Objective The learners should be able to investigate changes that happen in the absence of oxygen. B. Materials ● fire. Activity: TITLE: ABSENCE OF OXYGEN Jar with cover (Jar A) Jar without cover (Jar B) 2 same sized candle (small) Match or lighter Timer Ruler C. Precautionary Measure Remember to handle match or lighter carefully and don't play with it for it can cause D. Procedure 1. Label the jar with cover with Jar A and the jar without cover as Jar B. 2. Light the candles with a match and put the candles in each jar. 3. Record the time when the candles are lighted and the time when the light was put off. 4. Cover the Jar A and observe what will happen. 5. Measure the length of the candles after the flame was put off. 6. Record your findings on the chart below. Jars JAR A JAR B Time of the flame was put off Length of the candle after burning Answer the following questions: 1. Which of the 2 jars was the candle's flame put off first? 2. Which of the two candles has the shortest size? 3. What happen, when you cover the Jar A? 4. When the lighted candle in Jar A was covered, the flame was put off, what is the reason why the candle's flame did not continue to burn? 5. What are the 3 main components in combustion? Doss​

Use 17-32 to fill up the magic box To make a sum of 98 17 23 19 Time Started: Time Finished: 20​

Answer:

To make a sum of 98 using the numbers 17, 23, and 19, the missing number to fill the magic box is 39.

Step-by-step explanation:

To find the missing number in the magic box and make a sum of 98 using the numbers 17, 23, and 19, we set up the equation 17 + 23 + 19 + x = 98. By rearranging the equation, we find that x is equal to 98 minus the sum of 17, 23, and 19. Simplifying further, we calculate that x is equal to 39. Therefore, the missing number needed to fill the magic box and achieve a sum of 98 is 39.