NEETS Module 1

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20 Terms

1

Q1. What is matter, and in what three states is it found?

Anything that has mass and occupies space. It is commonly found in three states: solid, liquid, and gas.

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2

Q2. What is an element?

A pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom and is represented on the periodic table.

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3

Q3. What is a compound?

A substance formed when two or more different elements chemically bond together in fixed proportions. It has unique properties distinct from its constituent elements.

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4

Q4. What is the difference between a compound and a mixture?

One is a substance formed from two or more different elements that are chemically bonded in fixed ratios, while the other is a combination of two or more substances that are not chemically bonded and can vary in composition.

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5

Q5. What is a molecule?

A group of two or more atoms bonded together, which can be of the same or different elements. It can exist as simple units or as part of larger structures.

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6

Q6. What are the three types of subatomic particles, and what are their charges?

Protons (positive charge), neutrons (no charge), and electrons (negative charge). Protons and neutrons are found in the nucleus, while electrons orbit around it.

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7

Q7. What is energy of motion called?

Kinetic energy, which is the energy an object possesses due to its motion.

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8

Q8. How is invisible light changed to visible light in a fluorescent light?

Invisible light is converted to visible light in a fluorescent light by using a phosphor coating that absorbs the invisible ultraviolet light and re-emits it as visible light.

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9

Q9. What determines the valence of an atom?

The number of electrons in its outermost shell, which influences its ability to bond with other atoms.

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10

Q10. What is an ion?

An atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.

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11

Q11. What determines whether a substance is a conductor or an insulator?

The electrical conductivity of a substance, which is influenced by the presence of free electrons or ions that can carry electric charge.

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12

Q12. How is a negative charge created in a neutral body?

A negative charge in a neutral body is created when it gains excess electrons, resulting in an overall negative electrical charge.

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13

Q13. How are static charges created?

Static charges are created through the process of friction, where electrons are transferred between materials, leading to an imbalance of electrical charge.

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14

Q14. What is the electrical charge of an atom which contains 8 protons and 11 electrons?

The electrical charge of an atom with 8 protons and 11 electrons is negative, specifically -3, due to the excess of electrons.

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15

Q15. What is the relationship between charged bodies?

Charged bodies exert forces on each other, with like charges repelling and opposite charges attracting.

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16

Q16. What is an electrostatic field?

An electrostatic field is a region around a charged object where other charged objects experience a force. It is generated by the presence of electric charges and can influence the motion of other charges within its vicinity.

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17

Q17. In what direction are electrostatic lines of force drawn?

Electrostatic lines of force are drawn from positive charges to negative charges, indicating the direction of force experienced by a positive test charge.

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18

Q18. What are some examples of electrical equipment which use magnetism?

Examples include electric motors, generators, transformers, and inductors.

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19

Q19. What are magnetic materials?

Magnetism is generally defined as that property of a material which enables it to attract pieces of iron. A material possessing this property is known as a MAGNET.

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