8.5 B Protons and Electrons

Question 1

A positively charged subatomic particle of the nucleus of an atom that contributes to the mass of the atom.

Answer 1

Proton, p+

Question 2

The number of protons in the nucleus of one atom of the element.

Answer 2

Atomic Number

Question 3

A negatively charged subatomic particle of the the electron cloud that is involved in the formation of chemical bonds.

Answer 3

Electrons

Question 4

The regions around the nucleus where electrons may be found.

Answer 4

Energy Levels

Question 5

The electrons in the outermost energy level of an atom that influence how an element will react with other substances.

Answer 5

Valance Electrons

Question 6

Rate at which chemical substance tends to undergo a chemical reaction; significantly influenced by valence electrons of the reacting substances.

Answer 6

Reactivity

Question 7

The partially-filled outermost shell (or shells) determine the chemical properties of the atom; it is called the valence shell.

Answer 7

Outermost Electron Cloud

Question 8

The sum of the negative and positive charges

Answer 8

Net Charge

Question 9

Forms as a result of the loss or gain of electrons and are identified by the overall net charge

Answer 9

Ions

Question 10

Most elements are metals. They are typically solid, shiny, malleable, and good conductors of heat and electricity.

Answer 10

Metal

Question 11

Elements typically not shiny, usually a gas or brittle solid, not malleable, and poor conductors of heat and electricity.

Answer 11

Non-Metals