IPS semester 1 study guide Questions with Complete Solutions (Latest 2025) Identify the number of significant digits 4200 .5960 1,232,000 - Correct Answers ✅4 4 7 Discuss why a professional scientist would repeat an experiment many times. - Correct Answers ✅To see if any mistakes were made in experimental design, calculations, or analysis. To improve quality of work and share results and to give new ideas for other topics to investigate
Experiment 1.1 Baking soda: know purpose for the apparatus
and describe in full detail the results/observations of this experiment. - Correct Answers ✅Introduces the concept of "Controlled Experiments".
Observations made: nothing appears at the bottom of the
test tube, but droplets of a colorless liquid collect near the top of the test tube The purpose of the inverted bottle is to collect a gas The gas came from the baking soda The purpose of the "tea" is to see if there is a change between non heated/heated baking soda 1 / 2
IPS semester 1 study guide Questions with Complete Solutions (Latest 2025) What observations were made in the test tube when the baking soda was heated? - Correct Answers ✅Observations
made: nothing appears at the bottom of the test tube, but
droplets of a colorless liquid collect near the top of the test tube.What was the purpose of the inverted bottle in experiment 1.1? - Correct Answers ✅The purpose of the inverted bottle is to collect a gas.List the steps to calculate the percent of air in sand and its applications. (experiment 1.4) - Correct Answers ✅Steps for calculating 1.4 measuring volume by displacement of water.Volume of sand and water minus volume of water in graduated cylinder= volume of sand alone Volume of sand (and air) minus volume of sand alone= volume of airspace in sand (and air) Volume of sand alone divided by volume of sand= fraction of air space in the sand Discuss whether volume can or cannot be conserved? - Correct Answers ✅Volume cannot be conserved as demonstrated by the dissolving of salt in a given amount of liquid in figure 1.13 (p14)
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