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☆☆☆☆☆They can both help and hurt the environment. Some chemicals are necessary such as water, minerals, and the air we breathe. The exact effects depend on the exact chemicals. Some chemical waste can harm plants, wildlife, or even humans. Some chemicals such as phosphates can cause excessive red algae to grow in bodies of water. Oil and petrochemicals in the water can kill birds and fish.
- Alchemy was a form of early chemistry. you might think of it as potions and such, but it did deal with elements and their properties. i would imagine there was a lot of experimentation. the most common form of alchemy was the attempt to turn other elements, such as lead, into gold.
- It was started in the renaissance. Alchemy was often used for wealth to make metals into gold and aslo to figure out how nature works.
Some mixtures of two chemicals will bubble, most will not.
an anthill
since fire was discovered
Scientists used evidence, analysis, and experiments to disprove alchemy.
Atoms cannot be divided
Separating DNA
In every area of work
the atomic theory
The causes of honeybee deaths in beehives
Democritus
We live in a world where chemical products are abundant and indispensable.
All chemicals in the lab are to be considered dangerous. ... Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.
Atoms
