Significant Figures
The number of significant figures in 4.56
What is 3 significant figures
We compare observed data to ___________ data.
What is expected?
The method to separate sand and water
What is filtration?
The typical unit to measure cell size
What is "micrometer"?
H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
The number of significant figures in 0.06
What is 1 significant figure?
The degrees of freedom for 3 categories
What is 2?
The method to separate iron filings from a sulfur mixture
What is magnetism?
The base unit of length
What is "meter"?
C₃H₈ + O₂ → CO₂ + H₂O
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
The number of significant figures in 1000
What is 1 significant figure?
The degrees of freedom in a 3 x 3 table.
What is 4 degrees of freedom?
A method to separate liquids or solids based on density
What is decanting?
Which is larger 1mm or 1000 micrometers?
They are the same
Al + HCl → AlCl₃ + H₂
2Al + 6HCl → 2AlCl₃ + 3H₂
What is 2 significant figures
If the hypothesis is that there is a relationship between the IV and DV, and we have 3 degrees of freedom, the chi square value is 2.1, and the critical value is 7.81, do we reject or accept the hypothesis?
We accept the hypothesis
The method that could separate the components of ink
What is chromatography?
At 400x magnification, the field of view is 2mm. If 50 cells fit side by side. What is the length one cell in micrometers.
What is 40 micrometers?
C₂H₅OH + O₂ → CO₂ + H₂O
2C₂H₅OH +7 O₂ → 4CO₂ + 6H₂O
123.4
If the chi square value is 0, what does this tell us about observed and expected frequencies?
They are the same or similar
The property of liquids that can be used to separate a solution made of various liquids.
What is boiling points?
The diameter of the field of view at 40x is 5mm. When you switch to 100x, you count 100 cells that fit side by side. What is the length of one cell in micrometers?
What is 20 micrometers
NH₃ + O₂ → NO + H₂O
4NH₃ +5O₂ → 4NO +6 H₂O