Name _______________________________ Date __________________ SOL PS.2 1. The temperature at which a gas changes into a liquid is called what? 5. A solution that can dissolve more solute at a given temperature is called: A B C D A B C D the melting point the condensation point the boiling point the freezing point 2. The particle theory of matter suggests: A molecules of solids, liquids, and gases all move. B molecules of solids do not move. C only molecules of gases move. D only molecules of liquids have random motion. 3. When a liquid becomes cold enough: A B C D its molecules speed up. it turns into a gas. its molecules break apart. it turns into a solid. 4. On the pH scale, a neutral solution is indicated by what number? A 0 B 4 C 7 D 11 supersaturated. unsaturated. heterogeneous. saturated. 6. What is the correct ordering of these small parts of matter, from the smallest to the largest? A B C D proton < atom < nucleus atom < nucleus < proton nucleus < atom < proton proton < nucleus < atom 7. What usually causes matter to change state between solids, liquids, and gases? A a change in the strength of the surrounding magnetic field B a change in its temperature and/or pressure C a change in the size of its molecules D a change in its electric charge 8. What is the point at which a liquid changes into a gas? A B C D melting point condensation point boiling point freezing point _______________________________________________________________________________________________________ Copyright©1999,2000 S.S. Flanagan & D.E. Mott 7 Do not reproduce without permission. 07-15-00 Name _______________________________ Date __________________ SOL PS.2 9. Which set of states of matter and characteristic motion is most accurate? A solid - molecules twist and slide liquid - molecules vibrate gas - molecules are evenly spaced B solid - molecules are rigid liquid - molecules float freely gas - molecules are evenly spaced C solid - molecules vibrate liquid - molecules twist and slide gas - molecules float freely D solid - molecules are rigid liquid - molecules are evenly spaced gas - molecules twist and slide 12. Most nonmetals: A B C D are hard, shiny solids. are crystals. are radioactive. are not electrical conductors. 13. Which of the following elements is chemically stable? A B C D hydrogen chlorine potassium gold 10. Combustion is a chemical reaction in which a substance combines with what other substance? A B C D carbon oxygen nitrogen hydrogen 11. Which of the following sets of pairings is correct? A element - helium compound - carbon dioxide mixture - dirt B element - salt compound - sulfur mixture - rust C element - methane compound - blood mixture - soup D element - bronze compound - air mixture - oxygen _______________________________________________________________________________________________________ Copyright©1999,2000 S.S. Flanagan & D.E. Mott 8 Do not reproduce without permission. 07-15-00