4.1 through 4.3

Question 1

What is an atom?

Answer 1

Smallest unit of any element

Question 2

What is located in the nucleus?

Answer 2

Protons and neutrons

Question 3

How are electrons held in the atom?

Answer 3

Electrostatic attraction to the positively charged nucleus

Question 4

What is the atomic number?

Answer 4

Number of protons in an atoms nucleus

Question 5

What is all of the mass of an atom due to?

Answer 5

Protons and neutrons, electrons are negligible

Question 6

What is the atomic mass number?

Answer 6

Number of protons and neutrons in an atom

Question 7

What is an ion?

Answer 7

When a neutral atom gains or loses an electron and becomes charged

Question 8

What is a negatively charged ion?

Answer 8

Anion

Question 9

What is a positively charged ion?

Answer 9

Cation

Question 10

What is an isotope?

Answer 10

Nuclides of the same element but with differing number of neutrons; have nearly identical chemical properties

Question 11

What is the atomic weight of an atom?

Answer 11

Weighted average of all of the naturally occuring isotopes; value listed on periodic table