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Questions and Answers
What is the smallest unit of a chemical compound that can take part in a chemical reaction?
What is the smallest unit of a chemical compound that can take part in a chemical reaction?
Which of the following is a pure substance made up of one type of atom?
Which of the following is a pure substance made up of one type of atom?
What is the smallest particle of an element that can exist on its own and still have the chemical properties of that element?
What is the smallest particle of an element that can exist on its own and still have the chemical properties of that element?
Which of the following is composed of two or more different atoms?
Which of the following is composed of two or more different atoms?
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What is the difference between a molecule and a compound?
What is the difference between a molecule and a compound?
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What is the smallest unit of a chemical compound that can take part in a chemical reaction?
What is the smallest unit of a chemical compound that can take part in a chemical reaction?
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Which of the following elements exists as a single atom?
Which of the following elements exists as a single atom?
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What is the difference between a compound and a molecule?
What is the difference between a compound and a molecule?
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What is the smallest particle of an element that can exist on its own and still have the chemical properties of that element?
What is the smallest particle of an element that can exist on its own and still have the chemical properties of that element?
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What is a pure substance made up of one type of atom?
What is a pure substance made up of one type of atom?
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Study Notes
Atomic Structure
- An atom is the smallest particle of an element that can exist on its own and still have the chemical properties of that element.
- Elements are pure substances made up of one type of atom.
Elements
- Some elements exist as single atoms, such as carbon, gold, iron, and copper.
- Others exist as molecules, such as O2, N2, H2, and Cl2.
Molecules
- Molecules are a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
- They can take part in a chemical reaction.
Compounds
- Compounds are made up of two or more different atoms.
- Examples of compounds include CO2 and H2O.
Atomic Relations
- Atoms are related to elements, as they are the building blocks of elements.
- Molecules are related to elements and compounds, as they can be composed of atoms from different elements.
- Compounds are made up of two or more different atoms, which can come from different elements.
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Description
Test your knowledge of the basic building blocks of chemistry, including atoms, elements, molecules, and compounds. Learn how they are defined and how they relate to each other.
