Scientists
Atomic Structure
Bonds
Periodic Table
Names and Symbols
200

Dalton

What is the atomic theory?

200

Number of protons

What is atomic number

200

Number of electrons in a full outer shell

What is eight

200

Noble gases

What is the name for the last column

200

H

What is hydrogen

400

Watson and Crick

Who built the model of DNA?

400

mass of an electron

What is zero

400

Type of bond when the electronegativity difference is zero

Whatt is a non-polar covalent bond

400

Vertical rows

What are groups or families?

400

Cl

What is chlorine

600

Model of atom with electrons in concentric circles

Who is Bohr?

600

number of protons plus number of neutrons

What is mass number

600

Covalent bond

Bond in which atoms share one or more pairs of electrons

600

Horizontal rows

What are periods?

600

Calcium

What is Ca

800

Democratis

Who named the atom?

800

charge on a neutron

What is zero

800

type of bond where atoms exchange electrons

What is an ionic bond

800

Basis on which elements are arranged

What is increasing atomic number

800

Iron

What is Fe

1000

Mendeleev

Who created the periodic table?

1000

Two atomic particles with opposite charges

What are the proton and electron

1000

type of bond that holds the nitrogen pairs together in DNA

What is a hydrogen bond?

1000

Old name for Noble gases

What are inert gases

1000

Au

What is gold

M
e
n
u