How to Make a Solution | Chemistry and Biology Techniques

This video tutorial demonstrates how to prepare solutions for science projects using simple materials like plastic cups and graduated cylinders. It explains the concept of solutions, solutes, and solvents, and how to measure concentration. The video provides step-by-step instructions for making solutions with specific concentrations and discusses methods to adjust these concentrations. Examples include preparing Kool-aid solutions with varying concentrations.

What is a solution in the context of this video?

• A solid dissolved in another solid

• A gas dissolved in a liquid

• A liquid mixture where a solute is dissolved in a solvent

• A mixture of two or more solids

Which of the following is an example of a solute in a solution?

• Air in a balloon

• Plastic in a cup

• Water in a saltwater solution

• Kool-aid powder in water

How is concentration commonly expressed in solutions?

• Volume per temperature

• Mass per volume

• Volume per mass

• Mass per temperature

What is the mass of Kool-aid needed to make a 100 ml solution with a concentration of 50 grams per liter?

• 5 grams

• 20 grams

• 2 grams

• 10 grams

What tool is used to ensure accurate measurement of the final solution volume?

• Measuring spoon

• Volumetric flask

• Transfer pipette

• Beaker

How can you double the concentration of a Kool-aid solution?

• Heat the solution

• Add more water to the solution

• Add twice the amount of Kool-aid to the same amount of water

• Add the same amount of Kool-aid to twice the amount of water

What is one method to decrease the concentration of a solution?

• Add more solute

• Use a smaller container

• Dilute the solution with more solvent

• Increase the temperature