Ion Formation

Anion

• A positively charged ion formed when an atom loses electrons.

• A negatively charged ion formed when a neutral atom gains electrons.

• An atom that has an equal number of protons and electrons.

• A type of molecule that contains both positive and negative charges.

Compound Noun

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[kom-pound]

• A mixture of two or more substances that can be separated by physical means.

• A substance formed when two or more distinct chemical elements are chemically bonded together in fixed proportions.

• A single element that cannot be broken down into simpler substances.

• A solution where one substance is dissolved in another.

Cation

• A negatively charged ion formed when an atom gains electrons.

• A positively charged ion formed when a neutral atom loses one or more of its valence electrons.

• An atom that has an equal number of protons and electrons.

• A type of molecule that contains both positive and negative charges.

What are Valence Electrons?

• Electrons located in the nucleus of an atom.

• Electrons that are involved in chemical bonding and are found in the outermost shell of an atom.

• Electrons that are always positively charged.

• Electrons that are found in the inner shells of an atom.

What is an Electron-Dot Structure?

• A diagram that represents the valence electrons of an atom using dots placed around the element's chemical symbol.

• A method for calculating the atomic mass of an element.

• A type of chemical bond formed between two atoms.

• A representation of the nucleus of an atom.

What is a Chemical Bond?

• A type of chemical reaction that occurs between two substances.

• The persistent force of attraction that holds atoms or ions together in molecules, crystals, and other chemical species.

• A method of separating chemical compounds into their individual elements.

• A physical change that occurs when substances are mixed together.

What is Electron Affinity?

• The measure of the energy change that occurs when an electron is added to a neutral atom to form a negative ion.

• The energy required to remove an electron from a neutral atom.

• The energy change that occurs when a neutral atom gains a proton.

• The measure of the stability of a positive ion.

What is an Octet?

• A stable arrangement of eight valence electrons in the outermost energy level of an atom, resembling a noble gas.

• A type of chemical bond between two atoms.

• A term used to describe the process of electron transfer.

• A model that represents the nucleus of an atom.

What is Ionization Energy?

• The energy required to remove the most loosely bound electron from an isolated neutral gaseous atom.

• The energy required to add an electron to a neutral atom.

• The energy released when an electron is added to an atom.

• The energy required to break a chemical bond in a molecule.

What is a pseudo-noble gas configuration?

• A stable electron arrangement achieved when an atom has a full outer energy level with 18 electrons.

• A configuration where an atom has 8 electrons in its outer shell.

• A state where an atom has no electrons in its outer shell.

• A configuration that occurs only in noble gases.