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?
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 and R tied, as P and Q match
- R, Q, P
- P, Q, R
Kira ranks three more beakers. Which is the most concentrated?
- Beaker X, as it has the most liquid
- Beaker Y
- Beaker Z
- Beaker X, as it has the most dots
Which two beakers have the same concentration, Luz?
- K and L
- J and K
- No two beakers
- J and L, as they have the same dots
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 just as strong: same flavor
- The juice is more dilute
- The juice is stronger: more liquid
- The juice has no flavor
Noah's cocoa tastes too strong. Which change makes it less concentrated?
- Stir in more milk
- Let it sit
- Stir in more cocoa powder
- Pour half into another mug
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 lemon juice
- Add more water
“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
- 4 dots in 400 mL
- 8 dots packed into 200 mL
- 8 dots spread through 400 mL
Beaker C has 10 dots in 200 mL. Some water evaporates, leaving 100 mL. How has the concentration changed, Zee?
- It stayed the same: same dots
- It dropped to zero
- It halved: less liquid
- It doubled