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General Chemistry: Exam 1 Practice Test Questions and Answers | Latest Version | 2024/2025 | Already Passed R175,78   Add to cart

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General Chemistry: Exam 1 Practice Test Questions and Answers | Latest Version | 2024/2025 | Already Passed

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General Chemistry: Exam 1 Practice Test Questions and Answers | Latest Version | 2024/2025 | Already Passed What is the principle behind Rutherford's gold foil experiment? - It demonstrated that atoms consist of a large, positively charged nucleus surrounded by electrons. - It showed t...

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  • August 21, 2024
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  • 2024/2025
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General Chemistry: Exam 1 Practice Test
Questions and Answers | Latest Version
| 2024/2025 | Already Passed

What is the principle behind Rutherford's gold foil experiment?

- It demonstrated that atoms consist of a large, positively charged nucleus surrounded by

electrons.


- ✔✔ It showed that atoms have a dense, positively charged nucleus with electrons orbiting

around it.

- It proved that electrons are evenly distributed throughout the atom.

- It confirmed that atoms are indivisible particles.




Which of the following best describes the quantum mechanical model of the atom?

- It describes electrons as particles moving in fixed orbits around the nucleus.

- It depicts electrons as waves with specific quantized energy levels.


- ✔✔ It treats electrons as having both particle and wave characteristics, with their positions

described by probabilities.

- It suggests that electrons are located at random positions around the nucleus.




1

,What is the molecular shape of a molecule with a central atom that has two single bonds and two

lone pairs of electrons?

- Linear

- Trigonal planar


- ✔✔ Bent


- Tetrahedral




Which of the following elements has the highest electronegativity?

- Sodium

- Magnesium


- ✔✔ Fluorine


- Aluminum




What is the hybridization of the central atom in a molecule with a trigonal pyramidal shape?

- sp

- sp²


- ✔✔ sp³


- sp³d


2

, What type of intermolecular force is present in a sample of hydrogen chloride (HCl) gas?

- Ionic bonding

- Metallic bonding


- ✔✔ Dipole-dipole interactions


- Hydrogen bonding




What is the atomic number of an element that has 18 electrons and 18 protons?

-8

- 16


- ✔✔ 18


- 36




Which of the following statements about isotopes is correct?

- Isotopes of an element have the same number of neutrons but different numbers of protons.


- ✔✔ Isotopes of an element have the same number of protons but different numbers of neutrons.


- Isotopes of an element have different numbers of both protons and neutrons.

- Isotopes of an element have different numbers of protons and electrons.


3

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