Elements Memorization

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Front: Hydrogen (H) - Atomic Number 1

Back:

1. Lightest element

2. Highly flammable

3. Found in water (H₂O)

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Front: Helium (He) - Atomic Number 2

Back:

1. Second lightest element

2. Noble gas

3. Used in balloons

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Front: Lithium (Li) - Atomic Number 3

Back:

1. Light metal

2. Used in batteries

3. Reacts with water

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Front: Beryllium (Be) - Atomic Number 4

Back:

1. Light and strong metal

2. Used in aerospace

3. Toxic if inhaled

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Front: Boron (B) - Atomic Number 5

Back:

1. Metalloid

2. Used in glass and ceramics

3. Essential nutrient in small amounts

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Front: Carbon (C) - Atomic Number 6

Back:

1. Basis of organic life

2. Found in diamonds and graphite

3. Present in fossil fuels

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Front: Nitrogen (N) - Atomic Number 7

Back:

1. Makes up 78% of Earth's atmosphere

2. Used in fertilizers

3. Essential for protein formation

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Front: Oxygen (O) - Atomic Number 8

Back:

1. Essential for breathing

2. Makes up 21% of Earth's atmosphere

3. Found in water (H₂O)

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Front: Fluorine (F) - Atomic Number 9

Back:

1. Highly reactive

2. Used in toothpaste (fluoride)

3. Found in Teflon coatings

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Front: Neon (Ne) - Atomic Number 10

Back:

1. Noble gas

2. Used in neon signs

3. Colorless and odorless

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Front: Sodium (Na) - Atomic Number 11

Back:

1. Soft metal

2. Reacts vigorously with water

3. Found in table salt (NaCl)

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Front: Magnesium (Mg) - Atomic Number 12

Back:

1. Light metal

2. Used in fireworks

3. Essential nutrient

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Front: Aluminum (Al) - Atomic Number 13

Back:

1. Lightweight metal

2. Used in cans and foil

3. Good conductor of electricity

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Front: Silicon (Si) - Atomic Number 14

Back:

1. Metalloid

2. Used in electronics (semiconductors)

3. Found in sand and glass

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Front: Phosphorus (P) - Atomic Number 15

Back:

1. Essential for DNA

2. Used in fertilizers

3. Glows in the dark (white phosphorus)

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Front: Sulfur (S) - Atomic Number 16

Back:

1. Yellow nonmetal

2. Smells like rotten eggs

3. Used in matches

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Front: Chlorine (Cl) - Atomic Number 17

Back:

1. Greenish-yellow gas

2. Used in disinfectants

3. Found in table salt (NaCl)

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Front: Argon (Ar) - Atomic Number 18

Back:

1. Noble gas

2. Used in light bulbs

3. Colorless and odorless

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Front: Potassium (K) - Atomic Number 19

Back:

1. Soft metal

2. Reacts explosively with water

3. Essential nutrient

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Front: Calcium (Ca) - Atomic Number 20

Back:

1. Found in bones and teeth

2. Essential for muscle function

3. Used in cement

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Front: Scandium (Sc) - Atomic Number 21

Back:

1. Light transition metal

2. Used in aerospace components

3. Found in rare minerals

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Front: Titanium (Ti) - Atomic Number 22

Back:

1. Strong and lightweight

2. Used in aircraft and implants

3. Resistant to corrosion

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Front: Vanadium (V) - Atomic Number 23

Back:

1. Transition metal

2. Used in steel alloys

3. Found in certain minerals

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Front: Chromium (Cr) - Atomic Number 24

Back:

1. Shiny and hard

2. Used in stainless steel

3. Resistant to tarnish

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Front: Manganese (Mn) - Atomic Number 25

Back:

1. Transition metal

2. Used in steel production

3. Essential nutrient

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Front: Iron (Fe) - Atomic Number 26

Back:

1. Most used metal

2. Found in hemoglobin

3. Used in construction and manufacturing

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Front: Cobalt (Co) - Atomic Number 27

Back:

1. Transition metal

2. Used in batteries

3. Found in B12 vitamin

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Front: Nickel (Ni) - Atomic Number 28

Back:

1. Transition metal

2. Used in coins

3. Resistant to corrosion

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Front: Copper (Cu) - Atomic Number 29

Back:

1. Good conductor of electricity

2. Used in wiring and coins

3. Reddish metal

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Front: Zinc (Zn) - Atomic Number 30

Back:

1. Used in galvanizing

2. Essential nutrient

3. Found in batteries

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Front: Gallium (Ga) - Atomic Number 31

Back:

1. Melts in hand

2. Used in semiconductors

3. Soft metal

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Front: Germanium (Ge) - Atomic Number 32

Back:

1. Metalloid

2. Used in electronics

3. Semiconductor

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Front: Arsenic (As) - Atomic Number 33

Back:

1. Toxic metalloid

2. Used in pesticides

3. Found in minerals

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Front: Selenium (Se) - Atomic Number 34

Back:

1. Nonmetal

2. Essential nutrient

3. Used in photocopiers

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Front: Bromine (Br) - Atomic Number 35

Back:

1. Red-brown liquid

2. Used in flame retardants

3. Corrosive

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Front: Krypton (Kr) - Atomic Number 36

Back:

1. Noble gas

2. Used in lighting

3. Colorless and odorless

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Front: Rubidium (Rb) - Atomic Number 37

Back:

1. Soft metal

2. Highly reactive

3. Used in research

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Front: Strontium (Sr) - Atomic Number 38

Back:

1. Soft metal

2. Used in fireworks (red color)

3. Found in minerals

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Front: Yttrium (Y) - Atomic Number 39

Back:

1. Transition metal

2. Used in LEDs and phosphors

3. Found in rare-earth minerals

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Front: Zirconium (Zr) - Atomic Number 40

Back:

1. Strong and corrosion-resistant

2. Used in nuclear reactors

3. Found in zircon gems

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