Chemistry: First 12 Elements Flashcards

Study Notes

First 12 Elements of the Periodic Table

Hydrogen:
- Atomic number: 1
- Symbol: H
- Lightest and most abundant element in the universe.
Helium:
- Atomic number: 2
- Symbol: He
- Second most abundant element, exists in stars and used in balloons.
Lithium:
- Atomic number: 3
- Symbol: Li
- Light metal known for its use in rechargeable batteries.
Beryllium:
- Atomic number: 4
- Symbol: Be
- Used in aerospace components due to its lightweight and strong properties.
Boron:
- Atomic number: 5
- Symbol: B
- Essential for plant growth and used in glass and ceramics.
Carbon:
- Atomic number: 6
- Symbol: C
- Basis of all known life, found in various forms like graphite and diamond.
Nitrogen:
- Atomic number: 7
- Symbol: N
- Makes up 78% of Earth's atmosphere, essential for life and fertilizers.
Oxygen:
- Atomic number: 8
- Symbol: O
- Essential for respiration in living organisms, supports combustion.
Fluorine:
- Atomic number: 9
- Symbol: F
- Highly reactive gas, used in toothpaste and Teflon production.
Neon:
- Atomic number: 10
- Symbol: Ne
- Inert gas used in neon signs and lighting.
Sodium:
- Atomic number: 11
- Symbol: Na
- Highly reactive metal, essential for biological functions; found in table salt.
Magnesium:
- Atomic number: 12
- Symbol: Mg
- Important for many biochemical processes and used in construction and fireworks.

Description

This quiz focuses on the first 12 elements of the periodic table. Learn their atomic numbers and symbols through engaging flashcards. Perfect for beginners in chemistry or those needing a quick refresher.