Question

what is mixture ? and type of mixture?
what is atom?


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Answer 1

• Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.
• An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across. Wikipedia
• Components: Electrons and a compact nucleus of protons and neutrons
• Electric charge: zero (neutral), or ion charge
• Mass range: 1.67×10−27 to 4.52×10−25 kg
• Diameter range: 62 pm (He) to 520 pm (Cs) (data page)