Terms
Who are they?
Compounds
Periodic table
Element
100

A compound, such as water, i which two atoms share a pair of electrons.

What is covalent compound?

100

He conducted experiments and discovered the nucleus with a gold sheet experiment

What is Ernest Rutherford?

100

This compound is one carbon two oxygen  

What is CO2 or carbon dioxide  

100

this is the vertical row on the periodic table.  

what is a column or group. 

100
Atomic number, 1.

What is Hydrogen

200

A group of atoms in which the atoms are held together by the sharing of one or more pairs of electrons. 

What is a molecule?

200

He corrected Rutherford's discoveries and is part of the _-Rutherford diagram

What is Niels Bohr?

200

 This compound is two hydrogen one oxygen.  

What is H2O or Water.

200

This is the horizontal line on the periodic table. 

what is a period.

200

Atomic mass 132.9, Element symbol is Cs.

What is Cesium

300

A compound, such as a table of salt, in which oppositely charged ions are attracted to.  

What is ionic compound?

300

He determined there were streams of negatively charged particles that were later called electrons- made the raisin bun model

What is J. J. Thompson?

300

This compound has two Chlorine atoms. 

What is Cl2.

300

This is the number of elements we have discovered 

what is 118.

300

metal, liquid at room temperature 

What is Mercury

400

Links between two or more atoms that hold the atoms together.

What is chemical bonds?

400

He developed a theory to describe matter 

What is John Dalton?
400

This compound contains one sodium atom and one Chlorine atom,

what is NaCL or sodium chloride. 

400

The elements in the middle of the table

What is transition metals

400

Atomic mass of 47.9, 4th period in the 4th column.

What is titanium

500

They have a regular, repeating arrangement called an _____ _____. Is formed because the ions attract each other and form a regular pattern with oppositely charged ions next to each other.

What is ionic lattice? 

500
This famous scientist lived from 1879-1955

What is Albert Einstein?

500

This compounds has the attributes of 3 hydrogen atoms and 1 nitrogen atom.

What is NHor ammonia

500

The group with the atomic number 90-103

What is actinoid series 7

500

used to make airbags in automobiles

What is argon