Periodic table
How many elements are on the periodic table ?
118 elements
What is the atomic theory
A theory that all living things are made up of tiny particles called atoms
CO2
C + O2
O stands for what element ?
Oxygen
there are more then 118 elements
False
Most recently discovered elements
Oganesson
The theory claims that all atoms are ____
Invensible
3H2O
3H2 + O
Ca stands for what element ?
Calcium
Hydrogen is the lightest element
True
Most used element
Aluminum
Atoms that make compounds are _______ __ ___ ___________
Present is set proportions
NO2
N + O2
Na stands for what element ?
Sodium
Tennessine is the Heaviest element
False
First discovered element
Gold
All mater is formed by what ?
Atoms
CaCO3
Ca + C + O3
K stands for what element ?
Potassium
Iron was the first element discovered
False
When was the first element discovered
1649
Who originated the Atomic Theory
John Dalton
S2Cl2
S2 + Cl2
Rf stands for what element ?
Rutherfordium
Praseodymium is the 59 element
True