28 S U M M A R Y. Decide whether physics or chemistry studies these aspects of matter. a) The composition of matter. b) Changes in matter that do not affect its nature. c) Changes in matter that affect its nature and transform it into another substance. Give some examples in each case. 29 D I A G R A M . Complete the diagram with these terms in your notebook. Law – Hypothesis – Graphs – Theory – Experimentation – Observation – Tables – Data analysis – Yes – No Search for information Publish the results Predictions for unknown phenomena ... ... ... ... ... ... … ... Hypothesis confirmed? ... ... 30 S U M M A R Y. In your notebook classify these quantities as fundamental or derived, according to the SI. length force volume energy density mass speed time temperature ... Fundamental ... Derived 31 GRAPH. In your notebook match each graph with the expression that describes the relationship between the quantities. Y X Y X Y X a) b) c) I. Directly proportional quantities II. Inversely proportional quantities III. Directly proportional quantities with a negative constant 32 V O C A B U L A R Y. Which of these are SI units? Write the answer in your notebook. metre ampere kilogram litre gram square metre m/s Joule degree Celsius 33 D I A G R A M . In your notebook fill in the gaps to find a conversion factor that converts five hours into seconds. 1 h ... ... ... ... = = 5 hours = 5 hours ? Repeat the exercise to write 5 g/cL in SI units. 34 V O C A B U L A R Y. Classify this laboratory equipment as whether it is used for measuring, handling or protection. Erlenmeyer flask – spatula – pipette – glass rod – graduated cylinder – burette – scales – funnel – goggles – thermometer – gloves – dropper – pestle and mortar 1 o r g a n i s e yo u r i d e a s Use the STUDY NOTES to review the content of this unit. 29
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