Ch. 2

Question 1

Electrons

Answer 1

electrically negative

Question 2

Protons

Answer 2

electrically positive

Question 3

Neutrons

Answer 3

electrically neutral

Question 4

General structure of atom

Answer 4

protons + neutrons = nucleus
electrons surround nucleus
in electrically neutral atom, number of electrons = number of protons

Question 5

Atomic number

Answer 5

of protons in nucleus of element

Question 6

Mass number

Answer 6

of protons + # of neutrons

Question 7

Isotopes

Answer 7

atoms with same atomic # (protons) but different mass number (neutrons)

Question 8

Molecular formulas

Answer 8

describes composition of substance, but gives no structural information
Ex: C2H6O

Question 9

Condensed formulas

Answer 9

indicates how certain atoms are grouped together

Question 10

Structural formulas

Answer 10

shows how all atoms are attached within a molecule

Question 11

Cations

Answer 11

positively charged ion

Question 12

Anions

Answer 12

negatively charged ion

Question 13

Naming negative ions

Answer 13

monatomic: add -ide
polyatomic: suffixes -ite for smaller and -ate for larger
polyatomic: prefixes per- for largest and hypo- for smallest