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Module 2: REVIEW Measurements; Introduction to the scientific method/Diff Osmosis Flashcards | StudBud
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Module 2: REVIEW Measurements; Introduction to the scientific method/Diff Osmosis
Module 2: REVIEW Measurements; Introduction to the scientific method/Diff Osmosis
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Dimensional Analysis
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Answers
1
What does the prefix "Deci-" refer to?
10
1/1000 (0.001)
1/10 (0.1)
1/100 (0.01)
2
Where do you caption a table?
Above the table
Below the table
Beside the table (on right)
Any location, depending on format
3
All experiments have variables; what is the dependent variable in the osmosis experiment?
Time (sec)
Weight (grams)
Distance (mm)
Concentration (Molar)
4
Which is a correct prediction for the osmosis experiment
If we compare diffusion in 2 compounds that vary in MW, lighter is faster
If we compare osmosis in varying concentrations, higher is faster
Diffusion is affected by molecular weight (MW)
Osmosis is affected by concentration
5
Which is the first step in the scientific method?
Prediction
Observation
Experimentation
Hypothesis
6
All experiments have variables; what is the independent variable in an experiment?
The thing you try to remain standardized (do not alter)
Two of these are correct
The thing you change (alter or manipulate)
The thing you measure
7
How many ounces are in 30 grams? 1 lb = 453.6 grams; 16 oz = 1 lb
480 oz
1.06 oz
100.5 oz
0.945 oz
8
1 ATM = 760 mmHg = 101.3 kPa. How many pascals are in 0.863 ATM?
76,988 Pa
655.88 Pa
65,588 Pa
87,421.9 Pa
9
What is the dependent variable in the diffusion experiment?
Time (sec)
Permeability
Molecular weight
Distance (mm)
10
What is the standardized unit for pressure?
ATM
all of these are correct
Pascals (N/m^2)
mmHg
11
What independent variable are we testing in the diffusion experiment?
Permeability
Concentration
Molecular weight
Distance
12
Is this graph following the proper format?
Yes (independent on x, dependent on y)
No (independent on y, dependent on x)
Yes (independent on y, dependent on x)
No (independent on x, dependent on y)
13
_______ is the movement of solutes from the areas of high concentration to low concentration without the input of energy
Entropy
Solutions
Diffusion
Osmosis
14
What independent variable are we testing in the osmosis experiment?
Concentration
Permeability
Distance
Molecular weight
15
All experiments have variables; what is the dependent variable in an experiment?
The thing you try to remain standardized (do not alter)
The thing you change (alter or manipulate)
The thing you measure
Two of these are correct
16
When converting units, what do you start with to answer the question?
The unit you are given
The converted unit
The equivalent fraction
The numerator
17
Which is the correct hypothesis for the diffusion experiment
Diffusion is affected by molecular weight (MW)
If we compare osmosis in varying concentrations, higher is faster
Osmosis is affected by concentration
If we compare diffusion in 2 compounds that vary in MW, lighter is faster
18
What type of question is answered by a hypothesis?
Why
How
What
Who
19
What type of question is answered by a prediction?
Who
What
How
Why
20
All experiments have variables; what is the control variable in an experiment?
The thing you try to remain standardized (do not alter)
Two of these are correct
The thing you measure
The thing you change (alter or manipulate)
21
If 1 mile = 5280 ft & 1 inch = 2.54 cm; how many meters are in 11.75 miles?
18,909.8 m
1432.2 m
1,890,972 m
44,936 m
22
If you set the x axis (time, force, etc), where do you place the independent variable?
y axis
legend
x axis
z axis
23
Where do you caption a figure?
Above the figure
Below the figure
Any location, depending on format
Beside the figure (on right)
24
Solutions are composed of ___A___ (lower amount) and ____B____ (greater amount)
A) Solvents B) Solutes
A) Solutes B) Solvents
A) Gases B) Liquids
A) Independent B) Dependent
