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Stegall-Chemistry #3

Graphs & Analysis

QuestionAnswer
What is the formula for density? Density equals Mass divided by Volume.D=g/l
What is Specific Gravity? The comparison of the density of a substance with the density of water.
What is the Density of water? 1gram/milliliter
What is the Specific Gravity of a substance that floats in water? Less than 1.
What is the Specific Gravity of a substance that sinks in water? More than 1.
Accuracy? How close a measurement is to the real amount.
Precision? How close measurements of the same thing are to each other.
Error? A mistake or inaccuracy.
% error? The amount of % the calculation is wrong or away from the real amount.
What is the first rule for counting Significant Figures? All nonZero digits.
What is the second rule for counting Significant Figures? All zeros between nonZeros.
What is the third rule for counting Significant Figures? All number ending zeros to the right of the decimal.
How many digits are there in our numbering system? 10.
What are the 10 digits of our numbering system? 0,1,2,3,4,5,6,7,8,9.
What type of number writing do scientists use to express either very large or very small numbers? Scientific Notation
The second multplier in Scientific Notation is always what number to some exponent? 10
When you add 2 numbers written in Scientific Notation, what do you do with the second multiplier? Second multipliers must be alike. 10 with the same exponent.
What is the formula for calculating Density? Density = Mass / Volume
If something floats in water, what is its Specific Gravity? Less than 1
What is the Specific Gravity of water? 1
Created by: kastega
 

 



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