Chemistry Semester Exam

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom.

Tags

NGSS.HS-PS1-1

Front

What is the shorthand electron configuration for a Sulfur atom?

Back

[Ne] 3s²3p⁴

Tags

NGSS.HS-PS1-1

Front

Round the following number to 3 significant figures: 12.562 g

Back

12.6 g

Front

How does atomic radius change across a period and down a group?

Back

Atomic radius generally increases as we move down a group and from right to left across a period.

Front

What element could this dot diagram represent? (S)

Back

S (Sulfur)

Tags

NGSS.HS-PS1-1

Front

Define electronegativity.

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full set of eight valence electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond is formed through the transfer of electrons, while a covalent bond is formed through the sharing of electrons.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.

Front

What is a mole in chemistry?

Back

A mole is a unit that measures the amount of substance, defined as exactly 6.022 x 10²³ particles.