1. the Energy That Matter Has Because of Its Motion Is Called ______

chap 2

Completion Complete each statement.

1. The energy that matter has because of its motion is called ______. 2. The capacity to do work or produce light is known as ______. 3. A chemical reaction that releases energy is a(n) ______reaction. 4. The fact that mass and energy cannot be created or destroyed is the fundamental concept of the theme of ______. 5. A measure of the average kinetic energy of the particles in a sample of matter is its ______. 6. Specific heat is the amount of heat energy needed to raise the temperature of ______of a substance 1 K. 7. In using the scientific method, after analyzing results, the next step is to ______. 8. A proposed explanation of observations is a(n) ______. 9. A factor that could affect the results of an experiment is a(n) ______. 10. A well-tested explanation of observations is a(n) ______. 11. A statement or mathematical expression that reliably describes a behavior of the natural world is a(n) ______. 12. A testable statement used for making predictions and carrying out further experiments is a(n) ______. 13. When a candle burns, the total mass of the candle and the oxygen equals the total mass of the gases and ashes produced. This reaction illustrates the law of ______. 14. A laboratory balance is not adjusted correctly, and each mass measured is 0.54 g too high. A student finds the mass of a sample several times, and the masses are close to each other. The results are ______but not ______. 15. A measurement that closely agrees with accepted values is said to be ______. 16. If some measurements agree closely with each other but differ widely from the actual value, these measurements are ______but not ______. 17. The number of significant figures in the measured value 0.003 20 g is ______. 18. The number of significant figures in the measurement 210 cm is ______. 19. Using a metric ruler with 1-mm divisions, you find the sides of a rectangular piece of plywood are 3.54 cm and 4.85 cm. You calculate that the area is 17.1690 cm2. To the correct number of significant figures, the result should be expressed as ______. 20. When 64.4 is divided by 2.00, the correct number of significant figures in the result is ______. 21. The sum of 314.53 km and 32 km is correctly expressed as ______. 22. Rounded to four significant figures, 1.245 633 501  108 is ______. 23. Divide 5.7 m by 2 m. The quotient is correctly reported as ______. 24. The quantity of heat transferred during a temperature change depends on the ______and mass of the material and the ______of the temperature change. 25. The speed of light is 300 000 km/s. In scientific notation, this speed is ______. 26. The average distance between Earth and the moon is 386 000 km. Expressed in scientific notation, this distance is ______. 27. An analytical balance can measure mass to the nearest 1/10 000 of a gram, 0.0001 g. In scientific notation, the accuracy of the balance would be expressed as ______. 28. The result of dividing 107 by 10–3 is ______.