Chemistry
Grade-7
Easy
Question
Find the odd one out.
Rocks, table-salt, chocolate chip cookies, ice-cream
- Rocks
- Chocolate chip cookies
- Table-salt
- Ice-cream
Hint:
Table-salt
The correct answer is: Table-salt
- Only when dissolved in an adequate solvent, such as water, would table salt be categorised as a homogeneous mixture. Because there is just one phase present, it cannot be characterised as a heterogeneous mixture.
- A rock is a solid mixture of mineral crystals or biological materials. Rocks are classed based on their formation, composition, and texture. Hence they are heterogeneous.
- A chocolate chip cookie, which is composed using sugar, chocolate chips, butter, eggs, milk four, baking soda, and salt, is an example of a heterogeneous composition.
- Because solid ice (tiny crystals) are scattered in a liquid (cream) medium, icecream is a heterogeneous composition. A heterogeneous mixture is made up of two or more substances that remain physically separate.
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