- Hydrogen is the simplest, least dense and most abundant element in the universe.
- Hydrogen consists of one proton and one electron.
- Hydrogen accounts for approximately 75% of all the physical mass in the universe, mostly found in stars.
- Hydrogen is believed to be one of only three elements produced in the Big Bang; the other two are helium and lithium.
- Hydrogen consists of one proton and one electron.
- Diamonds are the hardest substance known to man.
- Most gemstones contain several elements. The exception? The diamond. It is all carbon.
- A diamond will not dissolve in acid. The only thing that can destroy it is intense heat.
- Graphite, one of the softest of substances, is also all carbon and one of its most stable forms.
- Most gemstones contain several elements. The exception? The diamond. It is all carbon.
- Boron nitride (BN) is the second hardest substance known to man.
- Boron is element 5, one less than carbon (6).
- Nitrogen is element 7, one more than carbon.
- Boron nitride also exists in a soft, graphite-like form.
- Boron is element 5, one less than carbon (6).
- Oxygen, carbon, hydrogen and nitrogen make up over 95% of the human body.
- Oxygen (65.0%)
- Carbon (18.5%)
- Hydrogen (9.5%)
- Nitrogen (3.2%)
- Oxygen (65.0%)
- Hydrofluoric acid (HF) will dissolve glass.
- Hydrofluoric acid dissolves many oxides, of which glass (mainly quartz - SiO2) is just one.
- Other acids, such as hydrochloric acid, nitric acid and sulfuric acid, do not dissolve glass.
- Hydrofluoric acid must be stored in plastic containers.
- Hydrofluoric acid dissolves many oxides, of which glass (mainly quartz - SiO2) is just one.
"Now faith is the substance of things hoped for, the evidence of things not seen. Hebrews 11:1 (NKJV)"
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