Bonding Pre-Test

Why do all bonds form?

• to fill the outermost energy level

• so an atom can be unstable

• so the number of protons and electrons can equal.

• so they can gain neutrons.

Tags

NGSS.HS-PS1-1

Valence electrons are found

• outermost energy level

• innermost energy level

• some where in the electron cloud

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An atom with 1 valence electron 'needs' a full shell, so it can either gain 7 electrons or lose 1. Which is more likely to occur?

• nothing

• gain 7

• lose 1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How do covalent bonds form?

• by sharing electrons between atoms

• by donating or receiving electrons

What two types of atoms make a covalent bond?

• 2 nonmetals

• 2 metals

• 1 metal and 1 nonmetal`

Ionic bonds are between

• metals and nonmetals

• 2 metals

• 2 nonmetals

How are ionic bonds formed?

• transfer of electrons

• sharing of electrons

Tags

NGSS.HS-PS1-3

Water is an example of what?

• molecular compound (covalent compound)

• ionic compound

Salt is an example of what?

• ionic compound

• covalent compound

Atoms involved in a covalent bond are not charged, while atoms involved in an ionic bond are charged (negative or positive)

• true

• false