Exploring Chemical Bonding Concepts

What are the two main categories into which matter is divided?

• Atoms and Molecules

• Mixtures and Pure Substances

• Solids and Liquids

• Elements and Compounds

Which of the following is an example of a chemical compound?

• Sand

• Oxygen

• Water

• Hydrogen

Tags

NGSS.MS-PS1-1

What is the smallest building block of an element?

• Molecule

• Atom

• Electron

• Proton

In the atomic model, where are the electrons located?

• In the center of the atom

• In the nucleus

• In orbitals around the nucleus

• In the outermost shell only

How many electrons can the first energy level hold?

• 8

• 6

• 4

• 2

What does the Lewis dot structure represent?

• Only the valence electrons

• All electrons in an atom

• The atomic mass

• Protons and neutrons

Tags

NGSS.MS-PS1-1

How many valence electrons does chlorine have?

• 7

• 8

• 5

• 6

What is the main reason atoms form chemical bonds?

• To increase their mass

• To lose electrons

• To become more stable

• To change their color

What is a molecule?

• A type of nonmetal

• A type of metal

• A combination of two or more atoms

• A single atom

Tags

NGSS.MS-PS1-1

What rule is often used to determine the stability of an atom's outer energy level?

• Duet rule

• Octet rule

• Quadruple rule

• Triple rule