The Periodic Table

Question 1

Alkali metal

Answer 1

A metal from group 1 on the periodic table

Question 2

Atom

Answer 2

The smallest particle of an element that retains the properties of that element

Question 3

Atomic number

Answer 3

The number of protons in the nucleus of an atom

Question 4

Compound

Answer 4

A substance containing atoms of two or more different elements, chemically combined, in a fixed ratio

Question 5

Displacement reaction

Answer 5

A reaction in which a more reactive species replaces a less reactive species in a compound

Question 6

Element

Answer 6

A substance made up of atoms that all have the same atomic number

Question 7

Group

Answer 7

A column on the periodic table

Question 8

Halogen

Answer 8

An element from group 7 on the periodic table

Question 9

Halide ion

Answer 9

The ion formed when a halogen element gains one electron

Question 10

Isotopes

Answer 10

Atoms of the same element that have the same atomic number but different mass numbers

Question 11

Mass number

Answer 11

The number of protons plus the number of neutrons in the nucleus of an atom

Question 12

Mixture

Answer 12

A substance containing atoms of two or more different substances not chemically combined in a variable ratio

Question 13

Molecule

Answer 13

The smallest particle of an atom that can have a separate independent existence

Question 14

Monatomic

Answer 14

A substance consisting of only one independent atom

Question 15

Noble gas

Answer 15

An element from group 0 on the periodic table

Question 16

Period

Answer 16

A row in the periodic table

Question 17

Periodic table

Answer 17

A table of elements arranged by increasing atomic number

Question 18

Redox reduction

Answer 18

A reaction in which both oxidation and reduction are occurring

Question 19

Translation metal

Answer 19

The name given to an element found between groups 2 and 3 on the periodic table