Problem:
The task is to classify the following substances as
solid,
liquid, or
gas and provide a reason for each classification. The substances listed are:
1. Oxygen
2. Water
3. Wood
4. Helium
5. Steel
Solution:
#### 1.
Oxygen
-
Classification: Gas
-
Reason: Oxygen is a gas at room temperature because it does not have a fixed shape or volume. It can expand to fill any container it is placed in, which is characteristic of gases.
#### 2.
Water
-
Classification: Liquid
-
Reason: Water is a liquid at room temperature because it has a definite volume but takes the shape of its container. Liquids flow and can be poured, which distinguishes them from solids and gases.
#### 3.
Wood
-
Classification: Solid
-
Reason: Wood is a solid because it has both a definite shape and a definite volume. Solids maintain their shape and do not flow under normal conditions.
#### 4.
Helium
-
Classification: Gas
-
Reason: Helium is a gas at room temperature because it does not have a fixed shape or volume. Like other gases, it can expand to fill any container and lacks rigidity.
#### 5.
Steel
-
Classification: Solid
-
Reason: Steel is a solid because it has both a definite shape and a definite volume. Solids are rigid and resist deformation, which is characteristic of materials like steel.
Final Answer:
\[
\boxed{
\begin{array}{ll}
Parent Tip: Review the logic above to help your child master the concept of solids liquid and gases worksheet.
