Calculating Concentrations

How do you increase the concentration of a solution?

• Add more powder or solute

• Add more water

• Less powder or solute

• Less water or solvent

How do you decrease the concentration of a solution?

• Add more powder or solute

• Add more water or solvent

• Less powder or solute

• Less water or solvent

What is the term we use when we have a less concentrated solution?

• dilute

• solvent

• concentrated

• volume

Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water

• 30%

• 25%

• 20%

• 15%

What is the percent by mass of a sugar solution where 10 grams of sugar is added to 100 grams of water?

• .10%

• 0.091%

• 9.1%

• 910%

What is the concentration, in percent by volume, of 15.3 mL of solute in 2650 mL of solution?

• 0.58%

• 0.0058%

• 5.8%

• 58%

You can make a solution more concentrated by adding more __________.

• solute

• solvent

• water

• lemonade

What does it mean to dilute a solution?

• lower the concentration of solute per solvent
• increase the concentration of solute per solvent

Which one is dilute?

• 10 g of sugar dissolved in 100 ml of water

• 10 g of sugar dissolved in 50 ml of water

• 20 g of sugar dissolved in 100 ml of water

• 20 g of sugar dissolved in 50 ml of water

It refers to the amount of solute dissolved in a given amount per volume of solution.

• Concentration

• Dilution

• Precipitation

• Solution

Tags

NGSS.HS-PS1-5