Chapter 2

Question 1

Actinide

Answer 1

Inner transition metal in the bottom of the bottom two rows of the periodic table

Question 2

Alkali Metal

Answer 2

Elements in Group 1

Question 3

Alkaline Earth Metal

Answer 3

Elements in group 2

Question 4

Alpha Particle

Answer 4

Positively charged particle consisting of two protons and two neurons

Question 5

Anion

Answer 5

Negatively charged atom or molecule (contains more electrons than protons)

Question 6

Atomic Mass

Answer 6

Average mass of atoms of an element (amu)

Question 7

Atomic Number

Answer 7

Number of protons in the nucleus of an atom

Question 8

Binary Acid

Answer 8

Compound that contains hydrogen and one other element bonded in a way that imparts acidic properties to the compound (ability to release H+ ions when dissolved in water)

Question 9

Binary Compound

Answer 9

Compound containing two different elements

Question 10

Cation

Answer 10

Positively charge atom or molecule (contains fewer electrons than protons)

Question 11

Chalcogen

Answer 11

Elements in group 16

Question 12

Chemical Symbol

Answer 12

one, two, or three-letter abbreviation used to represent an element or its atoms

Question 13

Covalent Bond

Answer 13

attractive force between the nuclei of a molecule’s atoms and pairs of electrons between atoms

Question 14

Covalent / Molecular Compound

Answer 14

Composed of molecules formed by atoms of two or more different elements

Question 15

Electron

Answer 15

Negatively charged, subatomic particle of relatively low mass located outside the nucleus

Question 16

Empirical Formula

Answer 16

Formula showing the composition of a compound given as the simplest whole-number ratio of atoms

Question 17

Group

Answer 17

Vertical columns of the periodic table

Question 18

Halogen

Answer 18

Elements in group 17

Question 19

Hydrate

Answer 19

Compound containing one or more water molecules bound within its crystals

Question 20

Inert / Noble Gas

Answer 20

Elements in group 18

Question 21

Inner Transition Metal

Answer 21

Elements in the bottom two rows of the periodic table

Question 22

Ion

Answer 22

Electrically charged atom or molecule (contains unequal numbers of protons and electrons)

Question 23

Ionic Bond

Answer 23

Electrostatic forces of attraction between the oppositely charged ions of an ionic compound

Question 24

Ionic Compound

Answer 24

Compound composed of cations and anions combined in ratios, yielding an electrically neutral substance

Question 25

Isomers

Answer 25

Compounds with the same chemical formula but different structures

Question 26

Isotopes

Answer 26

Atoms that contain the same number of protons but different numbers of neutrons

Question 27

Ianthanide

Answer 27

Inner transition metals on the top of the bottom two rows of the periodic table

Question 28

Law of Constant Composition

Answer 28

All samples of a pure compound contain the same elements in the same proportions by mass

Question 29

Law of Multiple Proportions

Answer 29

When two elements react to form more than one compound, a fixed mass of one element will react with masses of the other element in a ratio of small whole numbers

Question 30

Main Group Element

Answer 30

Element groups 1-2 and 13-18

Question 31

Mass Number

Answer 31

Sum of the numbers of neutrons and protons in the nucleus of an atom

Question 32

Metal

Answer 32

Element that is shiny, malleable, good conductor of heat and electricity

Question 33

Metalloid

Answer 33

Element that conducts heat and electricity moderately well, and possesses some properties of metals and some properties of nonmetals

Question 34

Molecular Compound

Answer 34

Composed of molecules formed by atoms of two or more different elements

Question 35

Molecular Formula

Answer 35

Formula indicating the composition of a molecule of a compound and giving the actual number of atoms of each element in a molecule of the compound

Question 36

Monatomic Ion

Answer 36

Ion composed of a single atom

Question 37

Neutron

Answer 37

Uncharged, subatomic particle located in the nucleus

Question 38

Nonmental

Answer 38

Element that appears dull, poor conductor of heat & electricity

Question 39

Nucleus

Answer 39

Positively charged center of an atom made up of protons and neutrons

Question 40

Period

Answer 40

Horizontal rows on the periodic table

Question 41

Periodic Law

Answer 41

Properties of the elements are periodic function of the atomic numbers

Question 42

Periodic Table

Answer 42

Table of the elements that places elements with similar chemical properties close together

Question 43

Polyatomic Ion

Answer 43

Ion composed of more than one atom

Question 44

Proton

Answer 44

Positively charged, subatomic particle located in the nucleus

Question 45

Structural Isomer

Answer 45

One of two substances that have the same molecular formula but different physical and chemical properties because their atoms are bonded differently

Question 46

Transition Metal

Answer 46

Element in groups 3-12