Scientific Method (1)
A __________ states that there is no relationship between the independent and dependent variables.
null hypothesis
Express 93,000,000 in scientific notation.
9.3 x 10^7
What is the total magnification of the lowest power on your microscopes?
10X (ocular) x 4X (scanning power) = 40X
What defines an acid?
A substance that donates a hydrogen ion in solution.
List three examples of carbohydrates.
Sugars, Starch, Cellulose
The __________ is the variable being manipulated or tested in the experiment.
Independent variable
Express 0.000862 in scientific notation.
8.62 x 10^-4
How much does magnification increase between scanning and low power?
2.5X
What color will phenolphthalein turn if an acid is added?
Clear
What test is used to identify reducing sugars?
Benedict's reagent
How to termites see?
They can't! They use pheromones for communicating things like mating, producing an alarm, and establishing a trail.
You are going to run a 10K race. Convert this to miles.
10 km x 1.6 mile/1 km = 6.25 miles
How does the field of view relate to magnification?
Inversely related
The pH scale is what kind of scale?
Logarithmic
What is the iodine test used for?
Distinguishing starch from other carbohydrates.
What happens to a gummy bear in a hypotonic solution?
It gains water and swells.
What is mass?
The measure of the quantity of matter.
What does parfocal mean?
After the image is focused with one objective, it should be in focus with others and only minor adjustments in focusing should be necessary.
If the pH of a solution is 2, how reactive is it?
We don't know. pH doesn't tell us anything about reactivity or how dangerous something is.
What is the difference between saturated fatty acids and unsaturated fatty acids?
Saturated fats have the maximum number of hydrogen atoms, solid at room temperature.
Unsaturated fats have one or more double bonds between the carbon atoms (not max hydrogen atoms), liquid at room temperature.
In a typical solution, the __________ is the dissolving medium and the __________ is the substance dissolved.
Solvent; solute
What is volume?
What is the difference between depth of field and field of view?
Depth of field is the thickness of the specimen in focus at any one time, and field of view is the circular field you see when you look through the ocular.
What kind of substances/solutions are between the pH of 6 and 8?
Neutral ones (water), weak acids (milk), weak bases (blood)
What is the Sudan III test used for?
Lipid detection