Problem Analysis:
The worksheet is about the
changing states of water, which involves understanding how water transitions between its three main states:
solid (ice),
liquid (water), and
gas (water vapor). These changes are driven by heating or cooling processes.
Key Concepts:
1.
Melting: Ice (solid) turns into water (liquid) when it is heated.
2.
Evaporation: Water (liquid) turns into water vapor (gas) when it is heated.
3.
Condensation: Water vapor (gas) turns into water (liquid) when it is cooled.
4.
Freezing: Water (liquid) turns into ice (solid) when it is cooled.
Solution:
We need to fill in the blanks with either "heated" or "cooled" based on the process described.
#### 1.
Ice changes to water when it is _________.
-
Explanation: Ice is a solid form of water. When ice is heated, it melts and turns into liquid water.
-
Answer:
heated
#### 2.
Water changes to water vapor when it is _________.
-
Explanation: Water is a liquid. When water is heated, it evaporates and turns into water vapor (a gas).
-
Answer:
heated
#### 3.
Water vapor changes to water when it is _________.
-
Explanation: Water vapor is a gas. When water vapor is cooled, it condenses and turns back into liquid water.
-
Answer:
cooled
#### 4.
Water changes to ice when it is _________.
-
Explanation: Water is a liquid. When water is cooled, it freezes and turns into solid ice.
-
Answer:
cooled
Final Answer:
\[
\boxed{\text{heated, heated, cooled, cooled}}
\]
Parent Tip: Review the logic above to help your child master the concept of state of matter worksheet for 2nd grade.
