General Facts
What are the rows called on the periodic table?
Periods
What element is O?
Oxygen
What does the atomic number mean?
The number of protons (and electrons)
Which element is number 1 on the periodic table?
Hydrogen
What is a compound?
2 or more elements come together to become happy atoms and make a completely different substance.
What element explodes when it touches water?
Sodium
How many periods are there?
7
What two elements make salt?
Sodium and Chlorine
How many groups are there on the periodic table?
18
What element turns red when electrocuted?
Neon
How many electrons are on the outer rings of a happy atom?
8
What element is K?
Potassium
What makes up the staircase on the periodic table?
Metalloids
What element can pair with two fluorine atoms?
Magnesium
Who made the periodic table?
Dmitri Mendeleev
What is element 21 on the periodic table?
Scandium
How many elements are naturally occurring?
92
What is the element with 79 protons?
Gold
How did people make new, man-made, elements?
Particle Accelerators
What is the most radioactive natural element?
Radium