Understanding Concentration Feedback Loops and pH

Quiz
•
Science
•
10th Grade
•
Medium
+2
Standards-aligned
Duncan Delzell
Used 1+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the definition of concentration in a chemical solution?
The amount of solute dissolved in a given volume of solvent
The temperature at which a solution boils
The pressure exerted by a gas in a closed container
The rate at which a solute dissolves in a solvent
Tags
NGSS.HS-PS1-5
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which of the following best describes a positive feedback loop?
A process that decreases the output of a system
A process that amplifies changes and moves a system away from its balance
A process that maintains stability in a system
A process that reverses the direction of change in a system
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Explain negative feedback loops
By amplifying changes and moving the system away from balance
By reducing changes and bringing the system back to its set point or bring back to balance
By increasing the rate of chemical reactions
By maintaining a constant temperature
Tags
NGSS.HS-LS1-3
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the pH scale used for?
Measuring the temperature of a solution
Determining the concentration of solutes in a solution
Measuring the acidity or basicity of a solution
Calculating the density of a solution
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Compare acids and bases in terms of their pH values.
Acids have a pH greater than 7, while bases have a pH less than 7
Acids have a pH less than 7, while bases have a pH greater than 7
Both acids and bases have a pH of 7
Acids and bases have the same pH range
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A higher concentration of hydronium ions results in a higher pH
A higher concentration of hydroxide ions results in a lower pH
A higher concentration of hydronium ions results in a lower pH
Hydronium and hydroxide ions do not affect pH
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which sweet tea would you expect to taste the sweetest? M=mols/L
1M
3M
5 M
2.5M
Tags
NGSS.HS-PS1-5
8.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Analyze the impact of adding a strong acid to a neutral solution in terms of hydronium H30+ and hydroxide ion OH- concentrations.
The concentration of hydronium ions decreases, and the concentration of hydroxide ions increases
The concentration of hydronium ions increases, and the concentration of hydroxide ions decreases
Both hydronium and hydroxide ion concentrations remain unchanged
Both hydronium and hydroxide ion concentrations increase
9.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Last time in class we watched a video on Ocean Acidification. We watched and discussed how our shellfish shells are breaking down. What is the reason.
The hydrogen ions being created from CO2 being added to the ocean is consuming the carbonate ion which the shellfish need to make CaCO3
The acidity of the water is eating away at the shells
The CO2 is being absorbed by the shells
Tags
NGSS.HS-ESS2-6
NGSS.HS-ESS3-5
NGSS.HS-LS2-6
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