Periodic Table

Question 1

a chart that organizes information about all the known elements according to their properties

Answer 1

Periodic Table

Question 2

a code, usually made up of one or two letters, used to represent an element

Answer 2

Chemical Symbol

Question 3

the number of protons in the nucleus of an atom; used to identify an element

Answer 3

Atomic Number

Question 4

a measure of an atom’s mass that is equal to the number of protons and neutrons in the atom’s nucleus

Answer 4

Atomic Mass

Question 5

a horizontal row in the periodic table

Answer 5

Period

Question 6

a vertical column in the periodic table; also called a chemical family

Answer 6

Group

Question 7

a group of chemical symbols and numbers that shows the number of atoms of each element in a molecule.

Answer 7

Chemical Formula

Question 8

An element that conducts heat and electricity well, is shiny, and can be hammered into sheets or drawn into wires

Answer 8

Metal

Question 9

an element that does not conduct heat or electricity well and is dull and brittle or gaseous

Answer 9

Non Metal

Question 10

an element that has some properties of both metals and nonmetals

Answer 10

Metalloid

Question 11

one of six elemental gasses that does not naturally react with other element; Group 18 in the periodic table

Answer 11

Noble Gases

Question 12

the tendency of a substance to undergo chemical changes

Answer 12

Reactivity

Question 13

Elements in the same column of the Periodic Table all . . .
A. Have the same number of protons
B. Share the same atomic structure
C. Have similar physical characteristics
D. Share the same number of neutrons

Answer 13

C. Have similar physical characteristics

Question 14

An unknown element reacts with alkali metals. Which is the BEST conclusion about the unknown element?
A. It is a noble gas
B. It is in group 16
C. It is in group 17
D. It is an earth alkaline metal

Answer 14

C. It is in group 17

Question 15

Which BEST describes a row of elements in the periodic table?
A. Column
B. Family
C. Group
D. Period

Answer 15

D. Period

Question 16

Which elements are the least reactive on the periodic table?
A. Halogens
B. Noble gases
C. Alkali metals
D. Transition metals

Answer 16

B. Noble gases

Question 17

Which groups have the most highly reactive elements?
A. IA and VIIA
B. IA and VIIIA
C. IIA and VIIIA
D. IIA and VIIA

Answer 17

A. IA and VIIA

Question 18

Which BEST describes Groups 3 through 12 of the periodic table?
A. Alkaline earth metals
B. Transition metals
C. Metalloids
D. nonmetals

Answer 18

B. Transition metals

Question 19

What is the significance of metalloids?
A. They separate liquids from solids
B. They separate metals from nonmetals
C. They separate elements from compounds

Answer 19

B. They separate metals from nonmetals

Question 20

Which element in Period 3 is known to be a highly reactive metal?
A. Sulfur (S)
B. Argon (Ar)
C. Sodium (Na)
D. Scandium (Sc)

Answer 20

C. Sodium (Na)

Question 21

Which element is MORE LIKELY to react with sodium (Na)?
A. Magnesium (Mg)
B. Aluminum (Al)
C. Oxygen (O)
D. Radon (Rn)

Answer 21

C. Oxygen (O)

Question 22

Sodium reacts with water. Which element is MOST LIKELY to have a similar effect when exposed to water?
A. Carbon
B. Oxygen
C. Lithium
D. Gold

Answer 22

C. Lithium

Question 23

What do the atomic numbers represent?

Answer 23

Number of Protons