8G Science HW#11: Chapter 2.1 and 2.2

The central core of the atom, containing protons and usually neutrons is called _____.

• Nucleus

• Molecules

• Elements

• Valence Electrons

Small positively charged particles that are found in the nucleus of an atom is called _____.

• Nucleus

• Proton

• Neutron

• Electron

Small uncharged particles that are found in the nucleus of an atom is called _____.

• Nucleus

• Proton

• Neutron

• Electron

Tiny, negatively charged, high-energy particles that move around outside the nucleus of an atom is called _____.

• Nucleus

• Proton

• Neutron

• Electron

The electrons that are farthest away from the nucleus of an atom and are involved in chemical reactions is called _____.

• Nucleus

• Valence Electron

• Neutron

• Electron Dot Diagram

A representation of the number of valence electrons in an atom, using dots placed around the symbol of an element is called _____.

• Pixels

• Valence Electron

• Polymers

• Electron Dot Diagram

An element belonging to Group 17 of the periodic table.

• Halogen

• Nitrogen Family

• Alkaline Metal

• Noble Gas

True or False:

Chemical reactions involve the valence electrons of atoms.

• True

• False

True or False:

Elements in Groups 1 and 17 are less reactive.

• True

• False

True or False:

Chemical bonds form when electrons are transferred or shared between atoms.

• True

• False