1. Semester Test Study Questions

2. Physical Science Semester Study Questions. There will be 100 multiple choice questions. 1. What does all matter have, whether it is moving or still? 2. What is the definition of science? 3. What is a good way to analyze data? 4. What are some methods of communicating the results of scientific investigations? 5. What are 3 common kinds of scientific models? 6. What type of scientific model could be used to predict the weather? 7. Why is the international System of Units important? 8. What is the basic unit of length that a scientist is likely to use? 9. What is the study of the structures and properties of matter? 10. How can you analyze data?

3. 11. What is the purpose of a conclusion at the end of a scientific investigation? 12. What do scientists use to represent a system of an object? 13. How do scientists communicate scientific results? 14. What do we call a testable explanation based on observation? 15. What happens to the inertia as an object’s mass gets larger? 16. Is the explosion of fireworks, a chemical or physical change? 17. Why are chemical properties harder to observe than physical properties? 18. What is the best way to tell if a chemical change has taken place? 19. What property of matter is a measure of gravitational force? 20. What unit would be best for describing the volume of mercury used in an experiment?

4. 21. What chemical property is responsible for iron rusting? 22. Is souring milk an example of a physical or chemical change? 23. During a physical change, what always happens to matter? 24. What has mass and takes up space? 25. Does a change in state indicate that a chemical change or a physical change has happened? 26. Charred wood, ash, and smoke describe the results of a chemical or a physical change? 27. Why is freezing water to make ice considered a physical change? 28. Why is molding clay considered a physical change? 29. What factors could affect the temperature at which water boils? 30. Heating a balloon and it will expand is an example of Charles or Boyle’s law?

5. 31. Why can a bottle of perfume be smelled on the opposite side of the room after a period of time? 32. What is the melting point and freezing point of salt? 33. Do all particles of all types of matter move at the same speed? 34. Gaseous water particles coming together to a form droplet on a cup is an example of an exothermic or endothermic change? What type of matter does Boyle’s law tell us about? What happens when a liquid becomes a gas? How do elements join to form compounds? What compound is found in all living things? What is a solid solution of a metal or nonmetal dissolved in a metal? What is a solid solution of a metal dissolved in a metal called?

6. How can a compound be broken down? What forms when particles of two or more substances are evenly mixed? Is applying sand to a slick sidewalk an example of a helpful or harmful increase of friction? What best represents acceleration on a graph? What isn’t mass a measure of gravitational force? Why is weight not constant? What is an object that appears to stay in place that helps you detect motion in another object? What is mass? What is the formula for measuring speed? What is the difference in speed and velocity? What type of friction does a dolly with wheels have?

7. If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first? What happens to the momentum as a train increases its velocity? Why does a spacecraft orbiting the Earth move forward and in free fall? How is the acceleration of a cart determined? What is the SI unit for pressure? How do soap bubbles become round? What affects the amount of lift on an airplane’s wing? What does not affect the level at which a ship cruises at sea? What causes air to enter into a tornado? What is mechanical efficiency?

8. What causes machines not to be 100 % efficient? What simple machines were used by the Egyptians to build pyramids? What is the purpose of comparing the mechanical advantage of two machines? What is the definition of work? What is a machine with a grooved wheel that holds a cable? How would you compare the power between the same job done by two different people? What is the formula for mechanical advantage? What causes all of the potential energy of a roller coaster to be converted into kinetic energy? When a bat hits a baseball, what is transferred from the bat to the ball? What is a force that opposes motion between two surfaces that are touching?

9. What is needed to find the kinetic energy of an object? What is the ability to do work? What is used to measure energy from the sun? What are the 3 common states of matter? Who believed that atoms of the same element are exactly alike? If an isotope of uranium, uranium-235, has 92 protons, how many protons does uranium-238 have? What did Bohr, Democritus, Thomson, Dalton, and Rutherford all have in common? What is periodic law?

10. How did Mendeleev arrange the elements? How do the physical and chemical properties of the elements change, within a group or across each period? What elements are good conductors of thermal energy? When a halogen reacts with a metal, what is formed? What can group numbers on the periodic table help you determine? How many valence electrons does an heium need to have a filled outermost energy level? What does a sodium atom become when it loses its only valence electron?

11. Why is leaves changing colors in the fall an example of a chemical reaction? Why is ice melting not an example of a chemical reaction? How many atoms are represented in the formula CaCO3 ? What is the chemical formula for a dinitrogen trioxide molecule ? Why does the law of conservation of mass dictate that chemical equations be balanced? When a base is added to red litmus paper, what color will the indicator turn?

12. What is the pH of a neutral solution? What is a disadvantage of nuclear power plants over fossil fuel plants? What are the tiny particles that make up matter? Which part of the atom has a positive charge? What are the small particles that make up matter? What part of an atom has a positive charge? What is the name of an electric current that changes direction? How are electromagnetic waves arranged