Question 1

____ is the best natural conductor of electricity.&#10;A) Copper&#10;B) Silver&#10;C) Gold&#10;D) Aluminum

Accepted Answer

Silver is the best natural conductor of electricity among the given options. It has the highest electrical conductivity of all metals and can conduct electricity even better than copper.

Question 2

Electricity is composed of electrons.

Accepted Answer

Electricity is the flow of electrons through a conductor.

Question 3

The hydrogen atom contains one proton and one electron.

Accepted Answer

A hydrogen atom consists of one proton in the nucleus and one electron orbiting around the nucleus.

Question 4

The atoms of an insulator generally contain seven or eight valence electrons.

Accepted Answer

Insulators typically have valence electrons that are tightly bound to the nucleus, making them less likely to participate in chemical reactions. This results in atoms with full valence electron shells, typically containing seven or eight electrons.

Question 5

In 1808 a scientist named ____ proposed that all matter was composed of atoms.&#10;A) J.J.Thompson&#10;B) Niels Bohr&#10;C) Isaac Newton&#10;D) John Dalton

Accepted Answer

John Dalton proposed the theory that all matter is made up of small, indivisible particles called atoms in 1808.

Question 6

The orbit in which the electron exists is determined by the electron's weight times its speed times the diameter of the orbit.

Accepted Answer

The orbit in which the electron exists is determined by the balance between the electrostatic attraction between the electron and the nucleus and the centrifugal force of the electron's motion. The electron's weight is not a factor in determining its orbit.

Question 7

____ are materials that do not permit electrons to flow through them easily.&#10;A) Alternators&#10;B) Thermocouples&#10;C) Insulators&#10;D) Conductors

Accepted Answer

Insulators are materials that have high resistance and do not allow electrons to flow through them easily. Examples include rubber, glass, and air. Alternators and thermocouples are devices that convert energy from one form to another and are not materials. Conductors, on the other hand, are materials that allow electrons to flow through them easily, such as metals like copper and aluminum.

Question 8

In 1913 a scientist named ____ presented the most accepted theory concerning the structure of an atom.&#10;A) J.J.Thompson&#10;B) Niels Bohr&#10;C) Isaac Newton&#10;D) John Dalton

Accepted Answer

Niels Bohr presented the most accepted theory concerning the structure of an atom in 1913.

Question 9

____ produce electricity by chemical action.&#10;A) Batteries&#10;B) Solar cells&#10;C) Thermocouples&#10;D) Piezoelectric devices

Accepted Answer

Batteries produce electricity through a chemical reaction, where chemical energy is converted into electrical energy. Solar cells use the photovoltaic effect to directly convert sunlight into electricity. Thermocouples generate electricity from a temperature difference between two metals. Piezoelectric devices use pressure or mechanical stress to generate electricity.

Question 10

Since electrons are negatively charged particles and protons are positively charged particles, they repel each other.

Accepted Answer

Electrons and protons attract each other due to their opposite charges, according to Coulomb's law.

Deck 1: Atomic Structure