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Measuring in Chemistry labs

Measuring in Chemistry labs. “ WHAT DO YOU NEED TO KNOW? ” stuff to get good results. Measuring techniques…. Things we measure in chemistry are mass length temperature volume. “ WHAT DO YOU NEED TO KNOW? ” stuff to get good results. Measuring techniques…. Mass =

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Measuring in Chemistry labs

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  1. Measuring in Chemistry labs

  2. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Measuring techniques… Things we measure in chemistry are mass • length • temperature • volume

  3. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Measuring techniques… Mass = measured with an electronic balance use the metric system (grams)

  4. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Measuring techniques… Length= measured with a ruler. We use the metric system (cm)

  5. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Measuring techniques… When the measurement is EXACTLY on the line = you have to add a zero. For example 3.0 cm means it is exactly on the 3 line of the ruler

  6. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Measuring techniques… Temperature= measured with a thermometer • use the metric system (oC)

  7. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Measuring techniques… Volume of a cube = • measured with a ruler • use the metric system (cm) • use L X W X H

  8. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Measuring techniques… Volume of a liquid= • measured with a graduated cylinder • use the metric system (mL) • measure the bottom of the curve (meniscus)!

  9. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Observing techniques… We use 4 of our senses in the lab • Sight • Smell • Sound • Touch(the container… not the chemical!)

  10. “WHAT DO YOU NEED TO KNOW?” stuff to get good results Observing techniques… • Examples of things you can observe • with your eyes are… • with your nose are… • with your ears are… • with your hands are…

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