Susana heats up a sample of red crystals. while the sample is being heated, a gas is released and a blue powder is left after the heating. is the sample of red crystals an element or a compound? explain your answer.
the red crystals are compounds. this is because when the sample is heated, a gas (element) is released and blue powder (element) is left. two elements make up these red crystals. a compound can also be shown through color change - the red crystals, when heated, turn into blue powder. elements cannot be broken down into substances using physical force, like heating. so yes, this is a compound.
susana's red crystal sample is a compound because it was broken down into a gas and blue powder. it is not an element because elements cannot be broken down into simpler substances by ordinary means, such as heating.
make sure to include and elaborate on the fact(s) that:
- elements cannot be broken down into simpler substances.
- compounds can be broken down into simpler substances.
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natural selection and evolution are ideas presented by darwin in his book.
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