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Try These: How many Sig Figs in the following? .00234 20,002 29,000 2.3000 Solve 12.1012cm + 20.234cm + 11.12cm= 2.345cm X 11.023cmX.0023. Oh Wow…We need a review. Homogeneous Mixture-something consistent throughout Ex: Salt water

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Try These:How many Sig Figs in the following?.0023420,00229,0002.3000Solve12.1012cm + 20.234cm + 11.12cm=2.345cm X 11.023cmX.0023


Oh wow we need a review
Oh Wow…We need a review

  • Homogeneous Mixture-something consistent throughout Ex: Salt water

  • Heterogeneous-Mixed composition throughout Ex: Alphabet soup, Sample of Dirt

  • Element- Basic Building Block (See Periodic Table) Ex: N,I,O

  • Compound-composed of elements

    • Ex: CO2

  • Pure substance can’t be separated with out a change of composition (O2, NaCl (salt), H2O) can be elements or compounds


How does significant digits relate to tools in science
How does significant digits relate to tools in science?

  • Significant Digits show how precise a tool is

  • Precision is How close measurements are to each other

  • This is different than accuracy which is how close you are to the correct answer


Explain what a precise dart player would look like how would this compare to an accurate player
Explain what a precise dart player would look like. How would this compare to an accurate player?


What is in a good procedure
What is in a Good Procedure? would this compare to an accurate player?


What does it mean control a procedure
What does it mean Control a procedure? would this compare to an accurate player?

  • In a controlled experiment everything is the same except for the manipulated variable


How does this relate to an experimental control
How does this relate to an experimental control? would this compare to an accurate player?

  • An experimental control determines if the environment has any affect on the data


You will design an experiment to determine the affect of temperature on reaction rate
You will design an experiment to determine the affect of temperature on Reaction Rate

  • Available Materials

  • Beakers, Ice, Water, 3 polident tablets, graduated cylinders


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