Cset Subset Ii Science|Test Solutions 100%Pass

CSET Subset II Science Which of the following steps in making a cup of coffee involves a chemical change in matter? ANSWER-A burner on a propane stove is lighted to heat water. Which of the following liquids is the most acidic and will have the lowest pH? ANSWER-Vinegar C14 is an isotope of C12. Both carbon atoms have an atomic number of six. Which of the following is the main difference between these two types of carbon atom? ANSWER-The C14 atom has eight neutrons and the C12 atom has six neutrons. Which line in the table above accurately lists the mass, charge, and location of a proton? ANSWER-1 (mass) /positive (charge) / nucleus (location) Which of the following is the best example of the refraction of light waves? ANSWER-Light passing through raindrops produces a rainbow. Newton's third law of motion states that for every action there is an equal and opposite reaction. Which of the following is the best example of the application of this law? ANSWER-An inflated balloon moves through the air when a jet of air leaves its neck as it deflates. Which of the following examples best demonstrates the difference between thermal energy and temperature? ANSWER-A cup of water at 50°C contains less thermal energy than a bathtub full of water at 10°C. The stems of a bunch of just-cut white flowers are immersed in a container of water to which blue dye has been added. After 24 hours, 2 tablespoons of salt are added to the water. Twenty-four hours later the flowers will most likely appear: ANSWER-Wilted and light blue.