Question
Collect information and prepare table:
1.Atoms
2.Compounds
3.Mixtures
✓
Answer
1.Atoms are basic building blocks of matter. Desk, chair, air are made up of atoms.
2.1. A compound is a pure substance that contains two or more elements. Compounds are chemical combination of elements with properties that are different from the elements that formed them.
2. Substance is a compound only if its molecules are made up of atoms of different types e.g. Water, one molecule of water is made of two atoms of hydrogen and one atom of oxygen.
3.
2.1. A compound is a pure substance that contains two or more elements. Compounds are chemical combination of elements with properties that are different from the elements that formed them.
2. Substance is a compound only if its molecules are made up of atoms of different types e.g. Water, one molecule of water is made of two atoms of hydrogen and one atom of oxygen.
3.
- A mixture is two or more elements or compounds which are combined physically but no chemical reaction occurs.
- This means you can separate them again, e.g. air, brass.
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