Chemical Bonding

This diagram represents a neutral atom of fluorine-19.

Which best describes the structure of fluorine-19?

• 2 electrons in the first energy level; 7 electrons in the second energy level

• 2 electrons in the first energy level; 8 electrons in the second energy level

• 9 protons and 9 neutrons in the nucleus

• 10 protons and 9 neutrons in the nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A shorthand way of representing a substance and the ratio of elements.

• a compound

• a chemical formula

• a solution

• an element

Element or compound?
H₂O

• element
• compound

Tags

NGSS.HS-ESS2-5

Which type of chemical bond accounts for the high electrical conductivity in a bar of pure silver (Ag)?

• metallic

• ionic

• covalent

• hydrogen

Tags

NGSS.HS-PS1-3

What are ionic bonds?

• valence electrons transferred between atoms
• Inner most electrons transferred between atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why do ionic bonds form?

• so the number of protons equals the number of electrons

• the octet rule

• so an atom can become unstable

Tags

NGSS.HS-PS1-3

Based on its electron configuration, which element will MOST likely gain electrons from another element when forming an ionic compound?

• Potassium (K)

• Vanadium ((V)

• Iodine (I)

• Xenon (Xe)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element is MOST likely to form an ion with a negative 2 charge?

• oxygen

• nitrogen

• berylium

• magnesium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

When the number of electrons equals the number of protons the atom has what charge?

• sponge bob
• positive charge
• negative charge
• neutral charge

An atom that has gained or lost electrons is called ...

• a winner
• an isotope
• an ion
• a loser