Grade 2 Science Quiz on Dissolving Solids in Liquids

📚 Quick Study Guide

• 💧 Dissolving: When a solid mixes completely into a liquid, we say it dissolves.
• 🧂 Solute: The solid that dissolves (like sugar or salt).
• 🌊 Solvent: The liquid that the solid dissolves in (usually water).
• 🧪 Solution: The mixture you get after the solid dissolves in the liquid.
• 🌡️ Temperature: Usually, more solid can dissolve in a liquid if the liquid is warmer. Think about making hot tea with sugar vs. iced tea!
• 🥄 Stirring: Stirring helps solids dissolve faster.
• 🧊 Examples of Solids that Dissolve: Sugar, salt, some powders. Examples of solids that do NOT dissolve: Sand, pebbles.

🧪 Practice Quiz

1. What happens when a solid dissolves in a liquid?
   1. It disappears.
   2. It mixes completely into the liquid.
   3. It turns into a gas.


2. What do we call the solid that dissolves?
   1. Solvent
   2. Solution
   3. Solute


3. What liquid is commonly used to dissolve solids?
   1. Milk
   2. Water
   3. Juice


4. What is the mixture called after a solid dissolves?
   1. Solute
   2. Solvent
   3. Solution


5. Which of these helps a solid dissolve faster?
   1. Freezing
   2. Stirring
   3. Ignoring


6. Which of these solids will NOT dissolve in water?
   1. Sugar
   2. Salt
   3. Sand


7. What usually happens when you heat the liquid?
   1. Less solid dissolves
   2. More solid dissolves
   3. Nothing changes