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Questions and Answers
What distinguishes a compound from a mixture?
What distinguishes a compound from a mixture?
- Compounds retain the properties of their constituent elements.
- Compounds contain only one type of atom.
- Compounds can be separated by physical methods.
- Compounds are made of two or more different types of atom that are chemically joined. (correct)
Which statement is true regarding elements and compounds?
Which statement is true regarding elements and compounds?
- Elements are composed of more than one type of atom.
- Elements cannot be chemically combined with other substances.
- Elements and compounds can both be broken down into simpler substances.
- Compounds are composed of two or more different types of atoms. (correct)
How can a mixture be separated?
How can a mixture be separated?
- Only by heating.
- By chemical reactions.
- By changing its chemical structure.
- By physical methods. (correct)
What is true about the atoms in a compound?
What is true about the atoms in a compound?
Which of the following is NOT a characteristic of a mixture?
Which of the following is NOT a characteristic of a mixture?
Flashcards
Element
Element
A substance that cannot be broken down into simpler substances, made of only one type of atom.
Compound
Compound
A substance made of two or more different types of atoms that are chemically joined, having different properties from those elements.
Atom
Atom
The smallest particle of a substance, making up all matter including elements and compounds.
Mixture
Mixture
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Difference between Mixtures and Compounds
Difference between Mixtures and Compounds
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Study Notes
Elements
- Elements are substances that cannot be broken down into simpler substances.
- They consist of only one type of atom.
Compounds
- Compounds are substances composed of two or more different types of chemically joined atoms.
- Compounds exhibit distinct properties unlike their constituent elements.
Substances and Atoms
- All substances are made up of atoms, the smallest existing particles.
- Elements can be made of atoms or molecules.
- Compounds are always made of molecules (requiring at least two different types of atoms).
Mixtures
- A mixture contains two or more substances that haven't chemically reacted.
- Mixtures can be separated using physical methods, unlike compounds.
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