15 Questions
What is the smallest particle of matter that can take part in a chemical reaction?
Atom
How are pure substances classified based on the nature of their constituent particles?
Into elements and compounds
What are molecules?
Groups of atoms bonded together
What are elements?
Pure substances made up of only one kind of atoms
Give an example of a pure substance that is an element.
Hydrogen, oxygen, aluminium, gold, etc.
Matter is made up of tiny particles called molecules.
False
An atom is the smallest particle of matter which can take part in a chemical reaction.
True
Atoms can be seen under a microscope.
False
Molecules are groups of atoms bonded together.
True
Elements are pure substances made up of only one kind of molecule.
False
Pure substances are classified into two types: elements and compounds.
False
Atoms are visible under a microscope.
False
Molecules are made up of only one kind of atom.
False
An element is a pure substance made up of only one kind of atom.
True
Substances classified as pure substances are made up of one kind of atom or molecule.
True
Study Notes
Classification of Pure Substances
- Pure substances can be classified into two types: elements and compounds
- Elements are pure substances made up of only one kind of atom
- Compounds are pure substances made up of two or more kinds of atoms
Atoms and Molecules
- Atoms are the smallest particles of matter that can take part in a chemical reaction
- Molecules are groups of atoms bonded together
- Note: Atoms are not visible under a microscope (contradiction in the original text)
Elements
- An element is a pure substance made up of only one kind of atom
- Example of a pure substance that is an element: not specified in the original text, but examples could be hydrogen, oxygen, or carbon
Key Facts
- Matter is made up of tiny particles called molecules
- Substances classified as pure substances are made up of one kind of atom or molecule
Test your knowledge of basic chemistry with this quiz on atoms and molecules. Explore the fundamental units of matter and learn about the building blocks of all substances. Whether you're a science enthusiast or just curious about the world around you, this quiz will challenge and expand your understanding of atoms and molecules.
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