Chemistry Quiz

What is an atom?

• A group of molecules bonded together

• The smallest particle that cannot be divided further and is the building block of matter

• A type of compound

• A mixture of two or more elements

What is a molecule?

• A single atom of an element

• A type of pure substance

• A group of atoms bonded together

• A mixture of elements and compounds

What is the key difference between an element and a compound?

• An element is made of molecules, while a compound is made of atoms

• An element can be divided further, but a compound cannot

• An element is made of a single type of atom, while a compound is made of two or more different elements bonded together

• An element is always a liquid, while a compound is always a solid

Which of the following is a pure substance?

• A mixture of hydrogen and oxygen

• Water (H2O)

• Baking soda and aluminum mixed together

• Gold and table salt mixed together

What makes a substance pure?

• It is made of just one element or one compound

• It is a mixture of elements

• It is a compound of molecules

• It is a molecule made of atoms

What are atoms the basic building blocks of?

• Cells

• Molecules

• All matter

• Just living organisms

How many types of subatomic particles make up an atom?

• Two

• Three

• Four

• Five

What is located in the center of the atom?

• Electron

• Neutron

• Nucleus

• Orbit

Which subatomic particle has a positive electrical charge?

• Electron

• Neutron

• Proton

• Nucleus

What determines the chemical properties of atoms and how they can react with other atoms?

• Protons

• Neutrons

• Electrons

• Nucleus