Answer:
1. Formation of a gas
2. Formation of precipitate
3. Liberation or absorption of heat, light, or some form of energy
4. Distinct change in color
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Enthalpy change refers to the overall amount of heat added or lost with each step as you progress through your reaction.
anything that turns red litmus paper to blue it is an acid and vice versa is true
Answer:
Explanation:
The concept of the atom originated round 440 BC. Leucippus of Miletus came up with the idea. ... Atoms were impenetrably hard, meaning they could not be divided. In Greek, the prefix "a" means "not" and the word "tomos" means cut. Our word atom therefore comes from atomos, a Greek word meaning uncuttable.
Answer:
Mercury has the lowest freezing point for metals, but helium takes the winner for all substances.
Explanation:
