How concentrated is it? Comparing solutions
Grade 8 Science Worksheet
Circle the best answer, or write your answer on the line.
Ari's lemonade has 30 g of sugar dissolved in 500 mL. How many grams of sugar are in each 100 mL?
A big jug of lemonade has 45 g of sugar in 900 mL. How many grams of sugar are in each 100 mL, Bo?
Esme mixes a pitcher with 28 g of sugar in 400 mL. How many grams of sugar are in each 100 mL?
Beaker drawing (example data). Jun ranks three beakers from most to least concentrated. Which order is right?
- Q, P, R, as Q has the most liquid
- P, Q, R
- P, Q and R tied, as P and Q match
- R, Q, P
Milo makes juice from a frozen orange concentrate by stirring in three cans of water. How does the juice compare with the concentrate?
- The juice is stronger: more liquid
- The juice is just as strong: same flavor
- The juice is more dilute
- The juice has no flavor
Noah's cocoa tastes too strong. Which change makes it less concentrated?
- Pour half into another mug
- Stir in more milk
- Stir in more cocoa powder
- Let it sit
Pia's lemonade is too sour. Which change would make it less concentrated in lemon juice?
- Leave out the ice
- Pour half into a smaller glass
- Add more water
- Add more lemon juice
“example data” Beaker A has 8 dots in 200 mL. Ren adds 200 mL of water. Which drawing shows the beaker after?
- 16 dots in 400 mL
- 8 dots packed into 200 mL
- 4 dots in 400 mL
- 8 dots spread through 400 mL
Beaker B has 6 dots in 300 mL. Tala stirs in 6 more dots of sugar. Which drawing shows after?
- 12 dots in 300 mL
- 6 dots in 600 mL
- 12 dots in 150 mL
- 6 dots in 300 mL, unchanged
Beaker C has 10 dots in 200 mL. Some water evaporates, leaving 100 mL. How has the concentration changed, Zee?
- It dropped to zero
- It doubled
- It halved: less liquid
- It stayed the same: same dots