Nuclear Chemistry

Question 1

Atoms

Answer 1

The smallest unit of a chemical element.

Question 2

Atom Nucleus

Answer 2

A positively charged region of the center of the atom.

Question 3

Protons

Answer 3

They are positively charged particles.

Question 4

Neutrons

Answer 4

They don’t have a charge.

Question 5

Electrons

Answer 5

They are negatively charged particles.

Question 6

Atomic Number

Answer 6

The total number of protons in the nucleus of an atom.

Question 7

Atomic Mass

Answer 7

The quantity of matter contained in an atom of an element.

Question 8

Radius

Answer 8

The total distance from the nucleus of an atom to the outermost orbital of its electron.

Question 9

Isotopes

Answer 9

Atoms that have the same amount of protons, but different neutrons.

Question 10

Ions

Answer 10

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Question 11

Nuclear Fusion

Answer 11

A small particle merging to form a heavier nucleus.

Question 12

Nuclear Fission

Answer 12

A bigger particle breaking into smaller ones.

Question 13

Alpha Decay

Answer 13

A nuclear decay process in which a parent nucleus emits an alpha particle, consisting of two protons and two neutrons, similar to a helium nucleus.

Question 14

Beta Decay

Answer 14

A radioactive decay in which a beta ray is emitted from an atomic nucleus.

Question 15

Gamma Ray

Answer 15

An electromagnetic radiation that is emitted by an unstable nucleus of an atom during radioactive decay.

Question 16

Power Plants

Answer 16

A facility the generates electricity from primary energy sources, such as fossil fuels. nuclear power, or water.

Question 17

Valence Electrons

Answer 17

The electrons in the outermost shell, or energy level of an atom.

Question 18

Alkali Metals

Answer 18

A group of shiny, soft, highly reactive metals that include lithium, sodium, potassium, rubidium, cesium, and francium.

Question 19

Alkali Earth Metals

Answer 19

Any of the bivalent strongly basic metals of group 2 of the table comprising beryllium, magnesium, calcium, stronium, barium, and radium.

Question 20

Transition Metals

Answer 20

Any of various metallic elements such as chromium, iron, and nickel that have valence electrons in two shells instead of one.

Question 21

Halogens

Answer 21

Any of the elements flourine, chlorine, bromine, iodine, and astatine, occupying group 17 on the periodic table.

Question 22

Noble Gases

Answer 22

Any of the gaseous elements helium, neon, argon, krypton, xenon, and rudon, occupying group 18 of the periodic table.

Question 23

Lanthanides & Actinides

Answer 23

Elements with unfilled f orbitals.

Question 24

Cation

Answer 24

A positively charged ion, that would be attracted to the cathode in electrolysis.

Question 25

Anion

Answer 25

A negatively charged ion, that would be affected to the anode in electrolysis.

Question 26

Metals

Answer 26

A substance with high electrical conductivity, luster, and malleability, which readily has electrons to form positive ions.

Question 27

Metalloids

Answer 27

A chemical element that exhibits some metal & some non-metal properties.

Question 28

Non Metals

Answer 28

Elements that are generally poor conductors of electricity & heat.