It looks like you've uploaded an image containing a table with various substances and their properties, along with a task to classify them as
pure substances or
mixtures, and further classify the mixtures as
homogeneous or
heterogeneous.
Since I can't view images directly, I’ll guide you through how to solve this type of problem based on typical content in such tables. If you can provide the text from the image (e.g., the list of substances and their descriptions), I can give you a precise solution.
However, here’s how to approach this kind of classification:
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🔹 Step-by-Step Guide to Classify Substances
#### 1.
Pure Substance
- A substance that has a fixed composition and distinct chemical properties.
- Can be an
element (like oxygen, gold) or a
compound (like water, salt).
-
Examples: Water (H₂O), iron, sugar.
#### 2.
Mixture
- A combination of two or more substances that are not chemically bonded.
- Mixtures can be separated by physical means.
##### a.
Homogeneous Mixture
- Uniform composition throughout.
- Examples: Saltwater, air, brass.
##### b.
Heterogeneous Mixture
- Non-uniform composition; you can see different parts.
- Examples: Sand and water, salad, granite.
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✔ How to Classify Each Item
Let’s assume your table includes items like:
| Substance | Description |
|----------|-------------|
| Saltwater | Dissolved salt in water |
| Air | Mixture of gases |
| Iron | Metal element |
| Milk | Liquid with fat globules |
| Sand and water | Two visible phases |
Now classify each:
| Substance | Classification | Reason |
|------------------|------------------------|-------|
| Saltwater | Homogeneous mixture | Uniform appearance, dissolved salt |
| Air | Homogeneous mixture | Evenly mixed gases |
| Iron | Pure substance (element)| Single type of atom |
| Milk | Heterogeneous mixture | Fat droplets visible under microscope |
| Sand and water | Heterogeneous mixture | Layers separate over time |
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🧠 Tips:
-
Dissolved solids in liquids → Homogeneous mixture
-
Suspensions or emulsions → Heterogeneous
-
Elements and compounds → Pure substances
-
Air, alloys, solutions → Homogeneous mixtures
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If you can
type out the substances and their descriptions from the image, I’ll help you fill in the correct classifications with explanations for each one.
Just paste the list, and I’ll do the rest!
Parent Tip: Review the logic above to help your child master the concept of scientific prefixes and suffixes worksheet.
