Chapter 1

Question 0

Robert Boyle

Answer 0

Used experiments to define “Element”

Question 1

Element

Answer 1

Consists of 1 type of atom

Question 2

Element Symbol

Answer 2

1 or 2 letters that tell what the element is. Can be based off different languages.

Question 3

Compound

Answer 3

Substance that can be broken down into elements by chemical process.

Question 4

John Dalton

Answer 4

Created the “Atomic Theory”

Question 5

Law of Constant Composition

Answer 5

Compound always contains elements in exact composition to mass.

Question 6

Atom

Answer 6

Smallest unit of matter that makes up and element.

Question 7

Chemical Formula

Answer 7

When element symbols are used to show atoms present while subscripts show number of atoms.

Question 8

J.J. Thompson

Answer 8

Created Cathode Ray Tube, to determine electrons.

Question 9

Electron

Answer 9

Negatively charged particle around nucleus of atom.

Question 10

Proton

Answer 10

Positively charged particles in nucleus of atom.

Question 11

Neutron

Answer 11

Particles that contain no charge with mass similar to proton.

Question 12

Plum- Pudding Model

Answer 12

That a pudding with raisins is similar to an atom with a positively charged cloud with electrons scattered around.

Question 13

Nuclear Model

Answer 13

A model that shows an atom as a dense positive charged missile surrounded by electrons.

Question 14

Ernest Rutherford

Answer 14

Created the gold foil experiment to show the atoms makeup.

Question 15

Nucleus

Answer 15

Small, dense, positive charged atom center.

Question 16

Isotopes

Answer 16

Atoms of the same element with different number of neutrons.

Question 17

Atomic Number

Answer 17

Number of protons in the nucleus of an atom.

Question 18

Mass Number

Answer 18

Total number of protons and neutrons in the nucleus of an atom.

Question 19

Periodic Table

Answer 19

A chart that shows the elements and their properties.

Question 20

Group

Answer 20

Vertical column of elements with the same properties.

Question 21

Period

Answer 21

Horizontal row of elements on periodic table.

Question 22

Alkali Metal

Answer 22

Group 1

Question 23

Alkali Earth Metal

Answer 23

Group 2

Question 24

Halogens

Answer 24

Group 7

Question 25

Noble Gases

Answer 25

Group 8

Question 26

Transition Metals

Answer 26

Several series of elements on the periodic table that are solids.

Question 27

Metals

Answer 27

An element that is lustrous, malleable, and a good conductor.

Question 28

Metalloids

Answer 28

A element with both metal and nonmetal characteristic.

Question 29

Nonmetal

Answer 29

An element that does NOT exhibit metal characteristic.

Question 30

Diatomic Molecules

Answer 30

A molecule composed of 2 atoms.

Question 31

Ion

Answer 31

An atom or groups of atoms with a net of positive and negative charge.

Question 32

Cation

Answer 32

A positive ion.

Question 33

Anion

Answer 33

A negative ion

Question 34

Ionic Compound

Answer 34

A compound hat results when a metal reacts with a nonmetal.

Forms cations and anions

Question 35

Dmitri Mendeleev

Answer 35

Formulated the periodic table.