To solve the problem, we need to identify whether each of the given items is a
mixture or
not a mixture. Let's go through each item step by step:
Definitions:
-
Mixture: A combination of two or more substances that are not chemically combined. The components retain their individual properties.
-
Not a Mixture (Pure Substance): A single substance with a definite composition and properties.
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1. Water in a glass
-
Water is a pure substance (H₂O). It is not a mixture because it consists of only one type of molecule.
-
Answer: Not a mixture
2. Ice block
- Ice is solid water (H₂O). Like liquid water, it is a pure substance and not a mixture.
-
Answer: Not a mixture
3. Toothpaste
- Toothpaste is a combination of various ingredients such as fluoride, abrasives, binders, and flavoring agents. These components are mixed together but not chemically combined.
-
Answer: A mixture
4. Cup of cola
- Cola is a drink made from a mixture of water, carbon dioxide, sugar, flavorings, and other additives. These components are mixed but not chemically combined.
-
Answer: A mixture
5. Melted iron
- Melted iron is a pure substance (Fe). It is not a mixture because it consists of only one type of atom.
-
Answer: Not a mixture
6. Paint
- Paint is a mixture of pigments, solvents, binders, and other additives. These components are mixed together but not chemically combined.
-
Answer: A mixture
7. Orange juice
- Orange juice is a mixture of water, sugars, acids, vitamins, and other compounds extracted from oranges. These components are mixed but not chemically combined.
-
Answer: A mixture
8. Oxygen
- Oxygen is a pure substance (O₂). It is not a mixture because it consists of only one type of molecule.
-
Answer: Not a mixture
9. Bowl of soup
- Soup is a mixture of water, vegetables, meat, spices, and other ingredients. These components are mixed but not chemically combined.
-
Answer: A mixture
10. Golden rings
- Golden rings are typically made of gold alloy, which is a mixture of gold and other metals (e.g., copper, silver). This means they are not pure gold but a mixture of metals.
-
Answer: A mixture
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Final Answers:
1. Water in a glass:
Not a mixture
2. Ice block:
Not a mixture
3. Toothpaste:
A mixture
4. Cup of cola:
A mixture
5. Melted iron:
Not a mixture
6. Paint:
A mixture
7. Orange juice:
A mixture
8. Oxygen:
Not a mixture
9. Bowl of soup:
A mixture
10. Golden rings:
A mixture
---
Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & \text{Not a mixture} \\
2. & \text{Not a mixture} \\
3. & \text{A mixture} \\
4. & \text{A mixture} \\
5. & \text{Not a mixture} \\
6. & \text{A mixture} \\
7. & \text{A mixture} \\
8. & \text{Not a mixture} \\
9. & \text{A mixture} \\
10. & \text{A mixture} \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of mixtures and solutions worksheet 5th grade.
