Quiz on Basic Chemistry Concepts

What is the smallest unit of matter that retains the properties of an element?

• Molecule

• Atom

• Compound

• Ion

What is the central part of an atom that contains protons and neutrons?

• Electron cloud

• Nucleus

• Shell

• Orbital

Which subatomic particle has a negative charge and orbits the nucleus of an atom?

• Proton

• Neutron

• Electron

• Positron

What is a pure substance made of only one kind of atom?

• Compound

• Mixture

• Element

• Solution

What term describes atoms of the same element that have different numbers of neutrons?

• Isotopes

• Ions

• Molecules

• Compounds

What is a substance formed when two or more elements are chemically bonded together?

• Mixture

• Element

• Compound

• Solution

What type of bond is formed when one atom donates an electron to another atom?

• Covalent Bond

• Hydrogen Bond

• Ionic Bond

• Metallic Bond

What is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons?

• Isotope

• Ion

• Neutron

• Proton

What type of bond involves the sharing of electron pairs between atoms?

• Ionic Bond

• Covalent Bond

• Hydrogen Bond

• Metallic Bond

What is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction?

• Atom

• Molecule

• Ion

• Element