Show:
Atoms
Electrons or Not
Elements
Properties
Periodic Table
100
Particles that are smaller than an atom
What is subatomic particles?
100
All of the area inside an atom surrounding the nucleus where electrons are found.
What is an electron cloud?
100

The element with 79 protons.

What is Gold (Au)?

100

Non-metals in group 18 that are not reactive.

What is Noble Gases?

100
A table showing the elements arranged according to their atomic number.
What is a periodic table?
200
A positively charged subatomic particle
What is a proton?
200

Atoms with full outer shell (8 valence electrons) are considered.

What is stable?

200

The most reactive element on the periodic table

What is Francium?

200
The rows in a periodic table that classify elements by their energy levels.
What is a period?
200

The columns on a periodic table that arrange the elements according to their valence electron

What is Groups?

300
A subatomic particle without charge that contributes to the mass of the atom.
What is a neutron?
300

The electrons in the outermost energy level that take part in a chemical reaction.

What is valence electrons?

300
An element that is typically a hard, shiny, solid and is a good conductor of heat and electricity
What is a metal?
300
The ability of a material to be rolled, or hammered into thin sheets
What is malleability?
300
A symbol which represents each element on the periodic table
What is Chemical Symbol?
400

The number of protons in an atom

What is atomic number?

400
Atoms with the same number of protons but with different neutrons
What is an isotope?
400

An element that is usually a gas or a brittle solid, not malleable or ductile, and a poor conductor of heat and electricity

What is nonmetal?

400
The way that the surface of a mineral reflects light
What is luster?
400
Pure substances that cannot be broken down into simpler substances by chemical or physical means.
What is an element?
500
The average mass of electrons and protons in an atom
What is atomic mass?
500

The number of electrons that fit in each orbital (in order)

What is 2, 8, 18, 32?

500
An element that shares some properties of metals and some of non-metals
What is a metalloid?
500
A property that describes if heat or electrical charges pass through material easily
What is conductivity?
500
The architect of the periodic table
Who is Dmitri Mendeleev?