Question

1.Write the main features of Rutherford’s atomic model.
2.How can you prove that hydrogen burns in air to produce water?
3.Differentiate between oxidation reaction and reduction reaction.
4.What are protons, neutrons and electrons?

plz ans any one​

Answer 1

Answer:

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-/ Write the main features of Rutherford’s atomic model.

1. There is a positively charged centre in an atom called the nucleus.
2. Nearly all the mass of an atom resides at the nucleus.
3. The electrons revolve around the nucleus in circular orbits.
4. The size of nucleus is very small as compared to the size of the atom.

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-/ How can you prove that hydrogen burns in air to produce water?

• Hydrogen is a combustible gas . When hydrogen is burnt in presence of air it burns with a pop sound in oxygen with a blueish flame and forms water as a stream .
• When hydrogen combines with oxygen the result is water, where the atoms of hydrogen and oxygen are linked together to make a molecule with entirely different properties.
• This can also be stated as /- Heat + 2 H² + O² -----> 2H²O

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-/ What are protons, neutrons and electrons?

• Electron - The electron is a negatively charged particle found in atoms of all elements.
• Neutron - The neutron is a neutral particle found in nucleus of atoms of all elements.
• Proton - The proton is a negatively charged particle found in atoms of all elements.

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-/ Differentiate between oxidation reaction and reduction reaction.

• Oxidation is a reaction that removes an electron from a substance whereas reduction is a reaction that adds electrons to a substance .

• Thus, oxidation is the loss of electrons whereas reduction is the gain of electrons .

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Answer 2

Answer:

1. According to Rutherford's model an atom consists of: The centrally located nucleus: The nucleus is a centrally located positively charged mass. The entire mass of the atom is concentrated in it. ... The outer circular orbits: Electrons revolve in circular orbits (shell) in the space available around the nucleus.

2.

3. Oxidation vs Reduction

Oxidation occurs when a reactant loses electrons during the reaction. Reduction occurs when a reactant gains electrons during the reaction. This often occurs when metals are reacted with acid.

4. Electrons are a type of subatomic particle with a negative charge. Protons are a type of subatomic particle with a positive charge. Protons are bound together in an atom's nucleus as a result of the strong nuclear force. Neutrons are a type of subatomic particle with no charge (they're neutral).

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