Science Test Unit 1


Vocabulary

  • Observation- something fact-based you experience through your 4 senses

  • Inference- what you think/ decide about something you have observed

  • Accuracy-How close you are to the real/true value

  • Precision- When following a procedure, you get the same result over and over agian.

  • Lab Safety- actions and tools that keep us safe

  • Metric System- universal measuring system

  • Metric Conversion / Dimensional Analysis- converting unitd 



Key Questions to Review

  • How can we observe matter?- with our senses, touch, smell, sight

  • How do we describe matter?- changes, texture, observations and inferences, writing down, data tables, answering questions

  • What do we use to observe matter?- scoopula

  • What are important safety items in the lab?- chemical shower, eye wash, broken glass bin, saftey googles, tongs, gloves, ect.

  • Do I know the various items used in the science lab if I saw a picture of one?- review slidesho

  • What are key points for using a Bunsen burner safely?

  • What is accuracy?- How close you are to the real/true value

  • What is prescison?-When following a procedure, you get the same result over and over agian.

  • How do precision and accuracy differ?- accuracy is how close you are to the actual value and presion is how close the values are to eachother, not the target

  • Why do we use the metric system in science?- because it is the universal system

  • What do we do when our metric measurements are not in the correct metric units?- we use dimensional analysis and the conversion factor

  • What is a conversion factor and what is it used for? - to find the # in a diffrent unit, but the same value




Measurement Techniques

  • Key Techniques to review:

    • Can I find the correct measurement tools for different items we measure

    • Do I know Proper techniques

    • Do I remember to always include The Estimated digit/value

    • Do I know how to convert between units using given conversion factor?

    • If I saw a picture on paper, can I measure it accurately and precisely?



  • Metric System Units and Symbols - do I know what unit(s) we use to measure:

    • Length- mm, cm, m, km

    • Mass- mg, g, km

    • Volume- mL, L

    • Temperature- celsius, ℃

    • Time- sec, min, hr, day, week, year