Chemistry Final Exam Review

Which subatomic particle differs between isotopes of the same element?

• Protons

• Electrons

• Neutrons

• Nucleus

Tags

NGSS.HS-PS1-8

Carbon-14 has how many neutrons?

• 6

• 12

• 8

• 14

Which pair are isotopes of the same element?

• 12C and 14C

• 16O and 16N

• 19F and 20Ne

• 23Na and 24Mg

Atomic size increases as you move:

• Down a group

• Across a period left to right

• Up a group

• Toward fluorine

Which element has the highest electronegativity?

• Sodium

• Calcium

• Fluorine

• Iodine

Tags

NGSS.HS-PS1-2

A magnesium ion has a charge of:

• -1

• +2

• -2

• +1

Which element forms a –3 ion?

• Calcium

• Oxygen

• Nitrogen

• Sodium

An O²⁻ ion has how many electrons?

• 6

• 8

• 10

• 12

How many electron shells are in a Bohr model of sulfur?

• 1

• 2

• 3

• 4

How many dots are shown in the Lewis structure of chlorine?

• 5

• 7

• 8

• 6