Periodic Table (105)

Question 1

Periodic Table

Answer 1

An arrangement of elements in columns, based on a set of properties that repeat from row to row

Question 2

Mendeleev

Answer 2

A chemist who developed the periodic table and organized elements by their properties while leaving empty spaces for more elements to be discovered

Question 3

Element

Answer 3

A pure substance that cannot be broken down

Question 4

Period

Answer 4

A row going across on the Periodic Table

Question 5

Group / Family

Answer 5

A column going up and down on the Periodic Table

Question 6

Periodic law

Answer 6

The pattern of repeating properties down each group in the periodic table

Question 7

Chemical / Element Symbol

Answer 7

A one or two letter symbol that represents that name of an element

( ~ First letter is capital and potential second letter is lowercase ~ )

Question 8

Atomic Number

Answer 8

Number of protons in an element

Atomic # is also equal to the number of electrons

Question 9

Atomic Mass

Answer 9

The number of protons and neutrons in the nucleus (~center~) of an element

Question 10

Conductor

Answer 10

A material that allows things to flow

Question 11

Metal

Answer 11

Elements that are good conductors of heat and electric current

Question 12

Nonmetal

Answer 12

Elements that are poor conductors of heat and electric current

Question 13

Metalloid

Answer 13

Elements with properties that fall between those of metals and nonmetals

Question 14

Noble Gas

Answer 14

Elements in group 18, stable and unreactive

Question 14

Proton

Answer 14

A particle with a positive charge

Same amount as atomic number,

This particle identifies the element

Question 14

Neutron

Answer 14

A particle with a neutral charge,

Same amount as ( ~ atomic mass - atomic number ~ )

Question 15

Electron

Answer 15

A particle with a negative charge

Same amount as atomic number

Question 16

Valence Electron

Answer 16

Electrons on the outermost shell

Question 17

Orbital / Shell / Energy Level

Answer 17

Outer boundary of an atom, mostly empty space, each shell starting from the first shell can hold:
1st shell ~ 2 electrons
2nd shell ~ 8 electrons
3rd shell ~ 18 electrons
4th shell ~ 32 electrons

Question 18

Nucleus (~ In an atom ~ )

Answer 18

The center of an atom that contains neutrons and protons and therefore most of the mass

Question 19

Chemical Bond

Answer 19

A force of attraction between atoms to make them more stable

Question 20

Ion

Answer 20

When atoms transfer electrons and become charged particles

Question 21

Ionic Bond

Answer 21

The force of attraction that holds together positive and negative ions

A transfer of electrons

Question 22

Covalent Bond

Answer 22

A force of attraction that holds together two atoms and shares electrons

Question 23

Chemical Formula

Answer 23

Shows the elements involved in that molecule and the number of atoms of each element

Question 24

Chemical Equation

Answer 24

Shows the molecules involved in a reaction

Reactants show the ingredients and the products show the results