Calculating Solution Concentration Concepts

The video tutorial by Svenia Luna from Science Buddies explains how to prepare solutions for science projects using simple materials like plastic cups and graduated cylinders. It covers the definition of solutions, the concept of solute and solvent, and how to measure concentration. The tutorial provides step-by-step instructions for making solutions with specific concentrations, using Kool-Aid as an example. It also discusses how to adjust solution concentrations and introduces the concept of dilution.

What materials are suggested for preparing solutions at home or in the classroom?

• Volumetric flasks and pipettes

• Plastic cups and graduated cylinders

• Beakers and Burettes

• Test tubes and funnels

In a solution, what is the term for the substance that gets dissolved?

• Solvent

• Solute

• Compound

• Mixture

How is concentration commonly expressed in solutions?

• Density per liter

• Volume per mass

• Weight per liter

• Mass per volume

To make a 100 ml solution with a concentration of 50 grams per liter, how much solute is needed?

• 100 grams

• 10 grams

• 5 grams

• 50 grams

What is the first step in preparing a solution with a specific concentration?

• Weigh the solute

• Stir the solution

• Add the solvent to the container

• Label the container

How do you calculate the mass per volume percentage of a solution?

• Divide the mass of solution by the volume of solute and multiply by 100

• Divide the mass of solute by the volume of solution and multiply by 100

• Divide the volume of solute by the mass of solution and multiply by 100

• Divide the volume of solution by the mass of solute and multiply by 100

If you need a 50 ml solution with a 16% mass per volume concentration, how much solute is required?

• 5 grams

• 50 grams

• 16 grams

• 8 grams

What happens if a solute does not dissolve in the solvent?

• A solution is still formed

• The solvent evaporates

• The solute becomes the solvent

• No solution is formed

How can you double the concentration of a solution?

• Decrease the temperature

• Increase the container size

• Add more solute

• Add more solvent

What should you do if you want to decrease the concentration of a solution?

• Increase the temperature

• Dilute the solution

• Add more solute

• Use a smaller container