False
Explanation:
A plant will die after being exposed to poison does not represent a physical change. A physical change is one that alters the physical state of matter and leads to no formation of new substances.
- The plant dies due to chemical changes in its structure.
- The poison will react with the chemicals in the system of the plant to produce new harmful ones.
- In a chemical change, new kind of substance forms in the plant and the change is irreversible.
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Experiments are usually done under the fumehood because the chemical processes will sometimes creates noxious or toxic gases
unknown chemical reaction could potentially create toxic fumes so generally a safety issue
sulfur dioxide will create a rotten egg smell off the top of my head which is used in order to detect gas leaks, wouldnt want to be smelling that, thinking there's a gas leak, evacuating the building, only to realize it was from an experiment or accidental mixture in the waste bin
The answer is (4) Sn. Malleability and conductivity are properties of metals, and Sn is the only metal of the four.
Nothing in particular determines the name of an element, it could range from who discovered it to where it was discovered!