Test 1: Chapters 1-4 Misc.

Question 1

Isotopes

Answer 1

atoms of the same element with the same atomic number but different number of neutrons

Question 2

Ionic compounds

Answer 2

metal + nonmetal, have empirical formulas

Question 3

Covalent molecules

Answer 3

nonmetal + nonmetal

Question 4

Ionic bonding

Answer 4

strong electrical charges between opposite charges that hold ions together

Question 5

Chemical Properties

Answer 5

can only be observed during a change in the identity of the substance under observation

Question 6

Ions

Answer 6

electrical charges form when atoms gain or lose electrons

Question 7

Chemical changes of matter

Answer 7

process that changes the identity of the substance being observed (reactions) e.g. rusting tarnishing, burning

Question 8

Atomic number

Answer 8

protons in an atom

Question 9

Mass number

Answer 9

protons + # neutrons

Question 10

neutrons in a nucleus

Answer 10

mass # - # protons