As a detective on the hunt for missing pure substances and mixtures, I've classified the items based on their nature. Here’s what I found around the home:
1. Sample of Soil
- Classification: Mixture
- Characteristics: Soil is a complex mixture composed of organic matter, minerals, gases, liquids, and microorganisms. It has a granular texture and can vary in color (brown, black, red, etc.) depending on its composition and location.
2. Milk
- Classification: Mixture
- Characteristics: Milk is an emulsion of fat droplets in water, containing proteins, lactose, vitamins, and minerals. Depending on the source (cow, goat, etc.) and processing, its color can range from white to cream.
3. Gold Jewelry
- Type of Jewelry: Gold ring (example)
- Characteristics: The ring may be characterized by its luster, malleability, and resistance to tarnishing. It typically has intricate designs or engravings, perhaps with embedded gemstones.
- Composition:
- Purity: Often 24K (pure gold) or lower karat values such as 18K (75% gold), 14K (58.3% gold), or 10K (41.7% gold).
- Alloys: Gold jewelry is often alloyed with copper, silver, or other metals to enhance strength and modify color. For example, 18K gold might contain zinc and copper.
4. Shampoo
- Name: Herbal Essences Bio:Renew Coconut Milk Shampoo
- Classification: Mixture
- Characteristics: This shampoo may contain a combination of surfactants, moisturizers, fragrances, and preservatives. It is typically viscous, bubbly when applied, and has a pleasant scent, usually featuring natural extracts.
Summary
In this investigation, we classified four items into pure substances and mixtures:
- Soil: Mixture
- Milk: Mixture
- Gold Jewelry: Mixture (gold alloy)
- Shampoo: Mixture
Each item highlights the diversity of substances and mixtures found in a typical home setting!