AP Chemistry Review

Unit 1: What does the atomic number represent?

• The number of neutrons
• The number of protons OR electrons
• The number of protons AND electrons combined
• The atomic mass

Unit 1: How many PROTONS does the element Potassium (K) have?

• 19
• 17
• 23
• 71

Unit 1: How many NEUTRONS does Magnesium (Mg) have?

• 10
• 32
• 12
• 22

Unit 1: How many ELECTRONS does the element Oxygen (O) have?

• 10
• 8
• 16
• 4

Tags

NGSS.HS-PS1-1

Unit 1: What is an Isotope?

• Nothing, they don't exist
• An element with the SAME mass as usual
• An element with a DIFFERENT number of protons than usual
• An element with a DIFFERENT mass than usual

Unit 1: Which of the answer choices in an ISOTOPE?

• ³²P
• P
• P^-2
• Li

Tags

NGSS.HS-PS1-8

Unit 1: What is an ION?

• An element that lost mass
• An element losing protons
• An element gaining or losing an electron
• An element that gained neutrons

Unit 1: What happens if an element has a "-1" next to it.

• It's gaining an electron
• It's losing an electron

Unit 1: What do you call an ion when it loses an electron?

• Anion
• Cation

Unit 1: How many protons does the ion Li⁺¹ have?

• 1
• 2
• 3
• 4