Atoms & Molecules: Building Blocks of Matter
Test your knowledge about the fundamental particles of matter and how they combine to form molecules.
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Quiz Questions & Answers
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Question 1: What happens to atoms during a chemical reaction?
They are destroyed
They are created
They are rearranged
They disappear
Question 2: Which subatomic particle has a negative charge?
Proton
Electron
Neutron
Positron
Question 3: What type of bond forms when atoms share electrons?
Ionic bond
Covalent bond
Hydrogen bond
Metallic bond
Question 4: Which statement about isotopes is correct?
They have different numbers of electrons
They have different numbers of protons
They have different numbers of neutrons
They have different chemical properties
Question 5: What determines an atom's chemical properties?
Number of neutrons
Number of protons
Atomic mass
Number of electron shells
Question 6: What is a molecule?
A single atom
Two or more atoms bonded together
A subatomic particle
An electron cloud
Question 7: What happens to electrons in an ionic bond?
They are shared equally
They are transferred from one atom to another
They are destroyed
They form new electrons
Question 8: What is the octet rule in atomic bonding?
Atoms need 8 protons
Atoms need 8 neutrons
Atoms need 8 valence electrons
Atoms need 8 electron shells
Question 9: Which best describes a polar molecule?
Has equal charge distribution
Has uneven charge distribution
Has no charge
Has only positive charges
Question 10: What determines the size of an atom?
Number of protons only
Electron cloud
Nuclear size
Number of neutrons