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Chemistry

Across
The energy content of a chemical system
You only need one of these to make water
Has a sour taste
The mass of a molecule in grams per mole
Its kinetic energy is high
Down
Its known as (q)
His number is 602,200,000,000,000,000,000,000
Atomic number= Protons= Electrons; Mass number- Atomic number= Neutrons
Has a bitter taste
Its atomic number is 12